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Old 10-12-2018, 08:32 PM   #1
Jerry_NJ
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Default injecting green slim into tire

My 2017 Impreza, about 12,000 miles developed a slow leak in one tire. I goes from 32 psi to dash board warning of 25 psi in about three or four days. That time sees about 50 miles of mixed rural driving. I have verified the loss of pressure with a gauge each time. Today I removed the valve with the tire on the ground and found I could not get any green slime injected into the tire. Is there something in the pressure sensing valve that prevents the injection? Maybe the green slime, about two years old, is just too thick.

I have done this type of repair in other vehicles and had good success.
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Old 10-12-2018, 08:59 PM   #2
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If you can, get to a shop and have them find the leak. Fixaflat or equivalent is terrible for your wheels over time
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Old 10-12-2018, 09:41 PM   #3
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You have to remove the valve core to get the slime in.. Usually the cap on the slime tube has a valve core remover and instructions on the label.
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Old 10-12-2018, 10:41 PM   #4
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Quote:
Originally Posted by f22boy View Post
If you can, get to a shop and have them find the leak. Fixaflat or equivalent is terrible for your wheels over time
Great idea.

Quote:
Originally Posted by rich3389 View Post
You have to remove the valve core to get the slime in.. Usually the cap on the slime tube has a valve core remover and instructions on the label.
While true, not sure that works with a TPMS wheel.

Quote:
Originally Posted by Jerry_NJ View Post
My 2017 Impreza, about 12,000 miles developed a slow leak in one tire. I goes from 32 psi to dash board warning of 25 psi in about three or four days. That time sees about 50 miles of mixed rural driving. I have verified the loss of pressure with a gauge each time. Today I removed the valve with the tire on the ground and found I could not get any green slime injected into the tire. Is there something in the pressure sensing valve that prevents the injection? Maybe the green slime, about two years old, is just too thick.

I have done this type of repair in other vehicles and had good success.
Great way to possibly ruin the TPMS sensor as well as really pissing of any tire shop.
Please be nice, let the shop know upfront you did/may have gotten sealer in the tire.
Not much worse for a tire guy to break a tire bead and get sprayed by sealer, especially early in the day and you have to deal with it until you can change.
Trust me, I know.

Granted, no spare or spare is flat, middle of Frikkin nowhere, poor weather, do what you can.
We get that.

Frankly, for anyone.......you have a leak that takes a couple days, Frikkin go to a shop.
Flat on the road is a different matter.
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Old 10-12-2018, 10:58 PM   #5
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Since you have the readout on the dash, you have the new style sensors.

They're about $100 each and usually anywhere from $50 to$100 to program, just really depends on your dealer.

That 6 buck can of slime will net you about $150 in repair of the sensor and still need a new tire.

Or have a shop find and repair the puncture.

Or have a tire shop order a shaved tire to match the other 3 so you don't destroy the center diff in the transmission.
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Old 10-13-2018, 12:35 AM   #6
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Thanks.
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Old 10-17-2018, 04:11 AM   #7
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awesome idea
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Old 10-17-2018, 12:30 PM   #8
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Slime or fix a flat is an emergency "get my @ss back on the road or else" fix only. I would not recommend it unless it's a last resort method....Plus (as others have said) tire shops HATE working on a wheel/tire that has had it used. It's nasty, gummy and basically screws up everything in there. Also, if you don't give it enough time to dry after you put it in, your wheel could be extremely off balance.

The source could be anywhere, valve core, tire bead against the wheel or anywhere in the tread. Just take it to a tire shop and pay the $10-15 (what it costs around me) to get it fixed.
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Old 10-17-2018, 03:21 PM   #9
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Quote:
Originally Posted by Jerry_NJ View Post
My 2017 Impreza, about 12,000 miles developed a slow leak in one tire. I goes from 32 psi to dash board warning of 25 psi in about three or four days. That time sees about 50 miles of mixed rural driving. I have verified the loss of pressure with a gauge each time. Today I removed the valve with the tire on the ground and found I could not get any green slime injected into the tire. Is there something in the pressure sensing valve that prevents the injection? Maybe the green slime, about two years old, is just too thick.

I have done this type of repair in other vehicles and had good success.
Please don't. Please.
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Old 10-17-2018, 08:07 PM   #10
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As others have noted, those instant tire repair products are great when you are in a jam, you absolutely have to be there, a spare isn't possible/doable within the time frame or situation, and there really are not other options. However, they are intended for use as a temporary solution, and in some cases they may cost more in the long run.

In your instance, using it may actually be more expensive than simply purchasing a brand new tire and having it shaved. You may want to call your tire repair center before proceeding, because some places consider the tire damaged beyond repair after use (due to the time/difficulty of cleaning it.) Further, even if it successfully seals the leak (even though it is made for temporary use), with no further action you could be left with an unbalanced tire, equating to rapidly pronounced uneven wear, ultimately necessitating replacement sooner. Finally, if it damages the TPMS sensor (which, to my understanding, the odds of this happening or not come down to the individual design), replacement of this may cost almost as much as a tire, and in the end you might still need to buy a tire regardless...
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Old 10-17-2018, 08:51 PM   #11
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Thanks all, due to my ineptness I was not able to get more than a drop in the tire. I have since pumped it up at least 3 times and after a couple days the leak again drops enough to turn on the low pressure light. In the Subaru it only tells me one of the tires is low. On my 2016 Chevy Colorado it also tells me which time, indeed gives me the pressure in each tire. That said, I bet this (Chevy) type is the one most easily damaged by slime as it has a pressure transmitter in each valve (I think). The Subaru uses the ABS/Electronic stability and feature to identify a tire that is turning faster, smaller, too low pressure. I don't think this type is as sensitive to goo in the tire. Don't know, so I'll not put an in. Subaru say $25 to fix, Costco says $12.95, no appointment needed at either place. I'll likely to got Costco as I can take care of flue shot at the same time.
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Old 10-17-2018, 10:27 PM   #12
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All Subarus since 2008 have active TPMS sensors in each wheel, the rubber stems have sensors attached. As a customer with a base model '17 Impreza decided to smash a curb this week and required a wheel bearing, tire, wheel, TPMS sensor replacement, and alignment.

Base model cars and 2016 and back, do not show individual pressures like the higher trims.
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Old 10-18-2018, 12:03 AM   #13
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Quote:
Originally Posted by Blktrax View Post
All Subarus since 2008 have active TPMS sensors in each wheel, the rubber stems have sensors attached. As a customer with a base model '17 Impreza decided to smash a curb this week and required a wheel bearing, tire, wheel, TPMS sensor replacement, and alignment.

Base model cars and 2016 and back, do not show individual pressures like the higher trims.
My 2018 STI does not show pressure either, just that it is low.
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Old 10-18-2018, 12:06 AM   #14
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My 2018 STI does not show pressure either, just that it is low.
Itís also has a no changes since 2015 gauge cluster.
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Old 10-18-2018, 11:19 AM   #15
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Thanks again, I can see how green slime, et.al., would destroy the sensor in the valve. Strange that Subaru couldn't manage to make the per tire information standard, Chevy did, my 2016 is a "Work Truck' model, drive like a large sedan and has full tire information on the display. It is the base model. I was also surprised when I paid $1000 to get the CVT in my base Impreza in 2017 and learned that it doesn't have paddle shift. Another case where Subaru isn't able to make a standard CVT used in all models that pay for it, even if purchased as an option in a model that comes with a standard transmission. A few years back I'd have purchased the standard manual tranny, but now I have to consider the possibility that I may not be able to shift sometime in the near future... I'm and old timer.
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Old 10-18-2018, 03:00 PM   #16
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Gotta love the bean counters that push consumers to more profitable models, by package bundling options.

Whatís funny though, if you buy a New Toyota Tacoma , there is $0 price difference between auto and manual trans
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Old 10-18-2018, 08:52 PM   #17
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It works with a tpms.

Quote:
Originally Posted by Charlie-III View Post
Great idea.



While true, not sure that works with a TPMS wheel.



Great way to possibly ruin the TPMS sensor as well as really pissing of any tire shop.
Please be nice, let the shop know upfront you did/may have gotten sealer in the tire.
Not much worse for a tire guy to break a tire bead and get sprayed by sealer, especially early in the day and you have to deal with it until you can change.
Trust me, I know.

Granted, no spare or spare is flat, middle of Frikkin nowhere, poor weather, do what you can.
We get that.

Frankly, for anyone.......you have a leak that takes a couple days, Frikkin go to a shop.
Flat on the road is a different matter.
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Old 10-18-2018, 10:00 PM   #18
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i worked at a big wheel and tire shop back in the day. we would not repair any tire that had any sealer or fix a flat type of stuff put it in. it seeps into the rubber and a patch will never stick well. also, plugs are seen as a temporary repair in the industry and a proper patch or patch/plug if the hole is big enough is the only permanent repair for punctures.
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Old 10-23-2018, 06:59 PM   #19
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Took car/tire into Costco, I liked what I saw through the window, not allowed in shop itself. They did a very professional job of removing the tire and even used a manual torque wrench to finalize the lugs on the tire, and checked all other tires. They use nitrogen rather than air, to fill tire. Sadly, the tire had two breaks, one (nail) in the tread body, repaired, on checking after that repair a leak near the edge of the tire was found and I was told it could not be repaired. The shop manger told me it is alright to replace just one tire (even with AWD) if it is the same brand and model. He did not carry Continental. The tire is 205/55 R16 but will have to read the model off the tire as owners manual did not say or I just didn't find it. Looking for views on replacing just one tire. The car/tires have approximately 12,000 miles on it/them.
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Old 10-24-2018, 07:28 PM   #20
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Quote:
Originally Posted by Jerry_NJ View Post
Took car/tire into Costco, I liked what I saw through the window, not allowed in shop itself. They did a very professional job of removing the tire and even used a manual torque wrench to finalize the lugs on the tire, and checked all other tires. They use nitrogen rather than air, to fill tire. Sadly, the tire had two breaks, one (nail) in the tread body, repaired, on checking after that repair a leak near the edge of the tire was found and I was told it could not be repaired. The shop manger told me it is alright to replace just one tire (even with AWD) if it is the same brand and model. He did not carry Continental. The tire is 205/55 R16 but will have to read the model off the tire as owners manual did not say or I just didn't find it. Looking for views on replacing just one tire. The car/tires have approximately 12,000 miles on it/them.
I was under the impression that the appropriateness of replacing a single tire with the identical tire to the existing three was determined by remaining tread depth of the three tires not being replaced, and that the acceptable tread deviation varies to some extent by the specific drivetrain.

How much tread is remaining on the three tires not being replaced? It looks like the tires you currently have get mixed owner notes on tread life, and the warranty appears to be 40k.

Last edited by get_schwifty; 10-24-2018 at 07:40 PM.
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Old 10-29-2018, 10:09 PM   #21
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Second try, first I'd welcome help on finding a "draft" folder if there is one. Seem all too often that when I am about done typing I hit something, maybe the touch pad on my laptop, and my "reply" disappears.

I reply here rather than start a new thread for a new related question about reset of pressure warning display.

I took my car to the Subaru dealer (Purchased the car there and it has been serviced there). They took me in without appointment and said it may be possible to replace just one tire but the shop would first determine if they can make a repair. They did, so much for the Costco evaluation, and $35, two miles more on odometer (test by mechanic I assume), and a free/included car wash I enjoyed driving the 5 miles home with the low pressure warning light out. Later I got in the car for an 11 mile drive to friends and found the light on, it stayed on all the way. Tomorrow before starting out again I will check the pressure on all four tires. Is it possible I need to "reset" the warning? Assume the mechanic handled if necessary. If the tires are up to pressure and the light remains on I'll check with the dealer's shop, the car is still under warranty. Suppose the pressure sensor in the tire could have gone bad coincidentally, there was no green slim in the tire, the tire was off twice, once at Costco and today at Subaru.
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Old 10-29-2018, 10:33 PM   #22
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Quote:
Originally Posted by Jerry_NJ View Post
Second try, first I'd welcome help on finding a "draft" folder if there is one. Seem all too often that when I am about done typing I hit something, maybe the touch pad on my laptop, and my "reply" disappears.

I reply here rather than start a new thread for a new related question about reset of pressure warning display.

I took my car to the Subaru dealer (Purchased the car there and it has been serviced there). They took me in without appointment and said it may be possible to replace just one tire but the shop would first determine if they can make a repair. They did, so much for the Costco evaluation, and $35, two miles more on odometer (test by mechanic I assume), and a free/included car wash I enjoyed driving the 5 miles home with the low pressure warning light out. Later I got in the car for an 11 mile drive to friends and found the light on, it stayed on all the way. Tomorrow before starting out again I will check the pressure on all four tires. Is it possible I need to "reset" the warning? Assume the mechanic handled if necessary. If the tires are up to pressure and the light remains on I'll check with the dealer's shop, the car is still under warranty. Suppose the pressure sensor in the tire could have gone bad coincidentally, there was no green slim in the tire, the tire was off twice, once at Costco and today at Subaru.
I do not about your car, but some have a TPMS on the spare, so check that as well.
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Old 10-30-2018, 12:38 AM   #23
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Anyone know if bicycle tubeless sealant could stop a leak in a tire?
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Old 10-30-2018, 09:24 AM   #24
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Anyone know if bicycle tubeless sealant could stop a leak in a tire?
Possibly, but as has been mentioned before, that is a "dark and rainy night away from home" fix.
Tire shops hate sealant.
TPMS sensors don't like it.
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Old 10-30-2018, 08:34 PM   #25
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I'll close this with my final result. First I learned not to use green slime or other flat fixes on a tire with TPMS. My attempt to do so did not do damage as I was not successful in shooting any into the tire.

After the Fix by the Subaru dealer I found my tire light again on, as noted in my last reply, and the following morning (this morning) the tire pressure was down to below 20 PSI. I pumped the tire up and returned to the dealer. They inspected and found a leak in the side wall and concluded as did Costco the a few days earlier, the tire had to be replaced. So I retract any negative I may have created concerning Costco tire work. They were correct, the dealer shop was wrong. I went ahead then to replace the tire and was assured by the Subaru dealership the difference in the tread depth between the one new tire and the three with 12,000 miles was not a problem. So, in my case it was possible to replace just one tire, as was suggested by the Costco mechanic, however Costco didn't carry the brand of tire I have on the car. Continental Procontact. The cost to me was $123.77 with credit given for the tire repair done the day before. Suggests the tire was more like $150, wow! I bet I can get tires for a lot less when time comes to replace all four. Even the dealer likely would do the job for something closer to three times the cost of one, or $450 for four tires, including all labor and balance/parts. I may price out tires at Costco just for a cross-reference for the future.
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