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Old 12-10-2005, 05:37 PM   #1
fastwrx
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Default 2 quarts low at 4000 miles!

Hi all,

Long time member... occasional poster. Got a 2004 STi. Did a search, but didn't spend a lot of time sifting through the threads.... too lazy!

I've been changing my own oil since I've had the car. Use Mobil 1 10w-30.

The car has always used some oil since I got it new. I've had to add about 1 quart per oil change interval.

Today, the car is at 4000 miles since last oil change (usually do it every 5000mi). I had to put TWO quarts in to get it to register near full on the dipstick!!

First question: My oil (idiot) light has never lit up while driving (thank gawd). And, it always went off right after start-up. Could any damage have been done running 2 qts low?

Second question: Is it normal for the STi to burn some oil?

Thanks!!

Mike
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Old 12-10-2005, 05:59 PM   #2
Hondaslayer
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Normal for it to use oil.

Idiot light will not come on at that level.

Change it every 3k-3.5k, not 5k.
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Old 12-10-2005, 06:15 PM   #3
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The oil light is not a level light, it is a low pressure warning light. It won't come on unless the pressure drops to about 2-3 psi, so if the level drops enough to turn on the light it means you are out of oil and the pump is sucking air. In other words don't rely on the light to tell you to check your oil because it may be too late by then.
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Old 12-10-2005, 07:31 PM   #4
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Unless you track the car or downshift into a lower gear for engine braking then one quart per 2,000 miles seems excessive. An engine will consume much more oil if you use engine braking from a high rpm often.
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Old 12-11-2005, 12:35 AM   #5
volkl23
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Quote:
Originally Posted by hondaslayer
Normal for it to use oil.

Idiot light will not come on at that level.

Change it every 3k-3.5k, not 5k.
It's is fairly safe to run it up to 7500 miles (and then, the oil filter is the weakpoint) if he's using M1. I've been running M1 for around 25k miles and do a used oil analysis at each interval. At around a 7000k interval, the oil was still going strong. The lab said I could go for another 1000 miles or so with no ill-effect. The OEM fileter (black one) also filtered pretty well even at 7000 miles.
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Old 12-11-2005, 09:44 AM   #6
fastwrx
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Quote:
Originally Posted by Mulder
The oil light is not a level light, it is a low pressure warning light. It won't come on unless the pressure drops to about 2-3 psi, so if the level drops enough to turn on the light it means you are out of oil and the pump is sucking air. In other words don't rely on the light to tell you to check your oil because it may be too late by then.
Oh, I know! By the time the light comes on, it's usually too late! I also realize it's a pressure-related sensor. I just mentioned it to be complete in my description of the situation.

Mike
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Old 12-11-2005, 09:48 AM   #7
fastwrx
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Quote:
Originally Posted by Hayes
Unless you track the car or downshift into a lower gear for engine braking then one quart per 2,000 miles seems excessive. An engine will consume much more oil if you use engine braking from a high rpm often.
I don't downshift for the purpose of engine braking. I do, however, heel-toe/rev-match my downshifts to stay in practice for track days.

I do track the car, but I haven't tracked it during this oil interval. (Actually, I haven't tracked it since I got my Lotus!)

My main concern was whether being 2 quarts low would damage the engine during normal driving.

Obviously, it would be a significant concern if it was that low during a track session (starvation issues in turns). I usually do an oil change before track sessions, and accordingly, the oil level is full and fresh.

Thanks for the comments.

Mike

Last edited by fastwrx; 12-11-2005 at 10:41 AM.
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Old 12-11-2005, 12:05 PM   #8
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First, you're a beyotch because you own not one, but two of my dream cars!

Two, stop using Mobil 1 5-10/30, it is known to shear easily and burn off. Try a more hardy oil, like Mobil 0/40, Mobil Truck & SUV, German Castrol 0/30, or even Rotella Synth 5/40.
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Old 12-11-2005, 01:21 PM   #9
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Quote:
Originally Posted by poison
First, you're a beyotch because you own not one, but two of my dream cars!

Two, stop using Mobil 1 5-10/30, it is known to shear easily and burn off. Try a more hardy oil, like Mobil 0/40, Mobil Truck & SUV, German Castrol 0/30, or even Rotella Synth 5/40.
My Lotus requires a synthetic 5w40. I'm using Valvoline's version, as that weight seems to be hard to find in other brands. I suppose I could use the same oil in the STi?

Mike - the "beyotch!" LOL
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Old 12-11-2005, 01:31 PM   #10
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You sure could, but all the oils I mentioned are better, aside from the Rotella. www.bobistheoilguy.com can give you plenty of oil analyses from different vehicles with those oils.
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Old 12-12-2005, 08:04 AM   #11
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does she still run good?

Im at 4k on my oil change (castrol dino) and while messing around in the snow I noticed my turbo wasnt boosting at low rpms as usual... so I stop to investigate as much as one can on the side of a snowy road... strange ticking from engine... hmmm... 2qt's low on oil

stop, buy oil, fill her up, pray to mt. fugi and drive home. Engine quiets down. By the time I get there my turbo is boosting as "normal"

Next day I get my wife to rev the engine while I stand behind... no blue smoke.

I have yet to put a boost guage on her to see how the turbo's doing but everything seems alright.

Good luck with her.
Dave
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Old 12-12-2005, 09:36 AM   #12
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Quote:
Originally Posted by Dextervw
...Im at 4k on my oil change (castrol dino) and while messing around in the snow I noticed my turbo wasnt boosting at low rpms as usual... so I stop to investigate as much as one can on the side of a snowy road... strange ticking from engine... hmmm... 2qt's low on oil

stop, buy oil, fill her up, pray to mt. fugi and drive home. Engine quiets down. By the time I get there my turbo is boosting as "normal"...
Hmmm, did you check that with the engine running?
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Old 12-12-2005, 10:54 AM   #13
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yes.. arnt you suppost to??


No I know what I'm doing... cept trusting newer (under 40k miles old) cars to hold their oil.. my vw race car is a different story.

Dave
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Old 12-12-2005, 11:13 AM   #14
fastwrx
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Quote:
Originally Posted by Dextervw
does she still run good?

Im at 4k on my oil change (castrol dino) and while messing around in the snow I noticed my turbo wasnt boosting at low rpms as usual... so I stop to investigate as much as one can on the side of a snowy road... strange ticking from engine... hmmm... 2qt's low on oil

stop, buy oil, fill her up, pray to mt. fugi and drive home. Engine quiets down. By the time I get there my turbo is boosting as "normal"

Next day I get my wife to rev the engine while I stand behind... no blue smoke.

I have yet to put a boost guage on her to see how the turbo's doing but everything seems alright.

Good luck with her.
Dave
Funny... I noticed a ticking sound, too.

Incidentally, my STi has about 52,000 miles on the odometer.

Mike
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Old 12-12-2005, 11:28 AM   #15
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Why are you guys using dino in a turbo? And in snow temps, of all things? Castrol is pretty shear resistant stuff, but dino isn't necessarily up to the job of protecting your turbo.

Try Mobil Truck & SUV. I'd bet that you won't burn a drop.
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Old 12-12-2005, 12:00 PM   #16
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how long have people been running turbo's on engines with dino oil in them....?
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Old 12-12-2005, 12:07 PM   #17
fastwrx
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Quote:
Originally Posted by poison
Why are you guys using dino in a turbo? And in snow temps, of all things? Castrol is pretty shear resistant stuff, but dino isn't necessarily up to the job of protecting your turbo.

Try Mobil Truck & SUV. I'd bet that you won't burn a drop.
Who's using "dino"? Not me. Mobil 1 10w30 for the last 45,000 miles.

Mike
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Old 12-12-2005, 01:48 PM   #18
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SoA will tell you 1 quart per 1,000 miles is acceptable. Stop using M1 10W30 if you do not want to add oil between changes. M1 10W30 is actually thinner than M1 5W30.

-Dennis
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Old 12-12-2005, 02:05 PM   #19
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Quote:
Originally Posted by Dextervw
how long have people been running turbo's on engines with dino oil in them....?
And how long did people use straight weight (30W, 40W) oils? What's your point?

As if using a superior product isn't a good idea because the other product works ok.
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Old 12-12-2005, 02:06 PM   #20
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Quote:
Originally Posted by bluesubie
M1 10W30 is actually thinner than M1 5W30.

-Dennis
But more shear resistant. Generally the closer the spread, the more shear resistant the oil.
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Old 12-12-2005, 07:49 PM   #21
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Quote:
Originally Posted by poison
But more shear resistant. Generally the closer the spread, the more shear resistant the oil.
With "generally" being the key word. We know that German Castrol throws a wrench into that statement. GC 0W30 is probably the most shear stable 30 weight on the planet.

-Dennis
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Old 12-12-2005, 08:43 PM   #22
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Very true, but the 'spread' rule hold for mobil 1.
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Old 12-13-2005, 06:38 AM   #23
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now what about the normal people who arnt oil experts, or myself who bought a car I didnt have to think much about as I have 2 others I have to pay much attention too... why cant I just follow what it says in the manual and be safe to drive my car around...
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Old 12-13-2005, 11:51 PM   #24
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Short story: The previous owner of mine always used Amsoil, one day while filling up I check my oil and it shows almost low. This is my new baby so I say "**** that" and buy 2 more quarts and dump them in. Now its WAY over so I'm wondering if mabey just letting it settle more then the 4 mins I gave it might give a better reading.
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Old 12-14-2005, 12:38 AM   #25
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man, i dunno but my car doesnt eat a drop of oil....id make sure ur on level ground and what not....2 quarts is not normal bro. My mustang took that much at it was smoking at WOT and idle
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