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Old 10-07-2013, 01:45 PM   #226
jr0bb5
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Are the Roki's not being produced anymore? I think I have 4 or 5 left so I'm good for a little while. I'll probably change to the blue Honeywells after my Roki's are gone depending on price/availability.

Btw, I've had a pair of yellow Rhino Ramps for 10+ years that I bought at Walmart. They've worked great for every car I owned, including the Impreza. One time my brother's friend actually drove up and over them. Not sure how they got the ramps out from under the car, but I wish I was there to witness that. The only car that was too low for them was my MazdaSpeed 6. I had to put the ramps on a decline in my yard in order to get up them.
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Old 10-07-2013, 02:22 PM   #227
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Quote:
Originally Posted by jr0bb5 View Post
Are the Roki's not being produced anymore? I think I have 4 or 5 left so I'm good for a little while. I'll probably change to the blue Honeywells after my Roki's are gone depending on price/availability.

Btw, I've had a pair of yellow Rhino Ramps for 10+ years that I bought at Walmart. They've worked great for every car I owned, including the Impreza. One time my brother's friend actually drove up and over them. Not sure how they got the ramps out from under the car, but I wish I was there to witness that. The only car that was too low for them was my MazdaSpeed 6. I had to put the ramps on a decline in my yard in order to get up them.
That's right, the black Roki filters are not being produced anymore, and have been replaced by the blue Honeywell filters. People who have cut these two different filters apart to compare them generally consider the Roki filters to be of higher quality, which is why people are so disappointed to see the Rokis become unavailable. This is also why, when my 6 Rokis are gone, I'll be switching to the highly-regarded FRAM XG7317 filter (even people who dislike FRAM products because of low-quality parts in the past admit that the XG filters are excellent).

NOTE: This is certainly not to say that the blue Honeywell filters aren't good enough to get the job done. I've never heard anyone say that a Honeywell filter has failed. It's more likely that the Roki and FRAM XG7317 filters are overkill for the job, but that's OK with me. I sleep better at night knowing that I've installed high-quality oil and filters on my car.

I had a bad experience with ramps 30 years ago, which is why I've always put my cars on jack stands since that time. I didn't drive over the ramps. Instead, I was driving my Honda Accord onto a set of traditional steel ramps, and the FWD car actually spit them out toward the rear of the car, causing the car's side rails to land on the ramps. I swore to never put the driven wheels of a car up on ramps again, and since the Impreza is AWD, that means I'll never use ramps on either end of this car.
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Old 10-07-2013, 09:47 PM   #228
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So if the Fram ultra is good for 15K, who is willing to run it for 2 OCIs?

Looks like people on the Bob Oil Guy forum seem to think its okay, Im just a skeptic.

That means that $42 of filters is good for 90k miles? nice
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Old 10-07-2013, 09:55 PM   #229
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So if the Fram ultra is good for 15K, who is willing to run it for 2 OCIs?

Looks like people on the Bob Oil Guy forum seem to think its okay, Im just a skeptic.

That means that $42 of filters is good for 90k miles? nice
I won't bother doing that. At $7/filter, it's just not worth it to me. I don't like messing around with engine lubrication.
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Old 10-07-2013, 10:05 PM   #230
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Id hate to start another oil debate thread, but you could potentially save 50% off on filters.

http://www.bobistheoilguy.com/forums...2971076&page=3
specifically page 3

these guys (who have thought about this way more than I) seem to think its perfectly normal and recommended to run to 15k.
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Old 10-07-2013, 10:16 PM   #231
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Originally Posted by myrt1987 View Post
Id hate to start another oil debate thread, but you could potentially save 50% off on filters.

http://www.bobistheoilguy.com/forums...2971076&page=3
specifically page 3

these guys (who have thought about this way more than I) seem to think its perfectly normal and recommended to run to 15k.
I'll tell you what. You do it first, then get a Used Oil Analysis, and report the results here. Tell us what brand of oil and which filter you used. If your UOA comes out solid, then I'll switch to your process and products used.

In the mean time, I'll be using Pennzoil Platinum and Roki filters, changing oil and filter at 6.5k miles.
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Old 10-07-2013, 10:20 PM   #232
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I also feel like its not worth taking the risk of not using a new filter at every oil change. It may very well be ok to use the same filter for 15k, but I'd rather change it. The oil filter in our cars is so easy to change anyway and I'm not worried about spending the $ on a new filter every OCI.
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Old 10-07-2013, 10:26 PM   #233
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I'm just paranoid, and the see it to believe it kinda guy. I over kill it, RP and Roki every 3-4000 miles.
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Old 10-07-2013, 10:28 PM   #234
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I'm just paranoid, and the see it to believe it kinda guy. I over kill it, RP and Roki every 3-4000 miles.
Now THAT's overkill, and I have a Used Oil Analysis to prove that a 6500 mile OCI works well.
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Old 10-07-2013, 10:42 PM   #235
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I'm just paranoid, and the see it to believe it kinda guy. I over kill it, RP and Roki every 3-4000 miles.
Is rp even a rated oil, ie sn rated?
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Old 10-07-2013, 10:49 PM   #236
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Is rp even a rated oil, ie sn rated?
Meets API,Service SN and ILSAC GF-5, and made in Porter TX. I use the RP HPS Series in a couple if my other cars I run hard. Never had any issues, and tear down looks good after :-)
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Old 10-07-2013, 11:07 PM   #237
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Quote:
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The PureOne counterpart is PL24458. The can volume is about double the stock filter.
I wish Purolator had a size chart. I'm seeing this filter has been discontinued and replaced with a smaller one.
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Old 10-08-2013, 07:47 AM   #238
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Originally Posted by G2Spfld View Post

Meets API,Service SN and ILSAC GF-5, and made in Porter TX. I use the RP HPS Series in a couple if my other cars I run hard. Never had any issues, and tear down looks good after :-)
Good to know, they didn't used to be iirc. but I'm happy with amsoil
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Old 10-08-2013, 11:06 AM   #239
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I went with a NAPA, bigger filter than stock or the recommended Mobil-1 filter, high bypass, $6 and change.
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Old 10-08-2013, 11:23 AM   #240
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I went with a NAPA, bigger filter than stock or the recommended Mobil-1 filter, high bypass, $6 and change.
Please explain what your research revealed about this NAPA filter. How do you know that the high bypass pressure is appropriate for our Imprezas? What do you know about the filter media? How do you know that, in this case, bigger is better?

I don't know if others agree, but I'm not willing to simply assume that a larger sized filter with a high bypass pressure is appropriate for our cars without understanding these details better.
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Old 10-08-2013, 11:55 AM   #241
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All things being equal, more media in a larger can is better. It will generate a smaller pressure delta across the media, which reduces or eliminates bypass flow.

In cars equipped with pressure gauges, I've seen increased pressure and flow with oversized filters.

I think the OEM filters have a bypass of ~25 PSI, which is higher than typical.
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Old 10-08-2013, 12:27 PM   #242
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Originally Posted by Commander Keen View Post
All things being equal, more media in a larger can is better. It will generate a smaller pressure delta across the media, which reduces or eliminates bypass flow.

In cars equipped with pressure gauges, I've seen increased pressure and flow with oversized filters.

I think the OEM filters have a bypass of ~25 PSI, which is higher than typical.
But that is due to the oil system and the amount of oil that circulates per minute in a Subaru boxer, it is higher than standard
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Old 10-10-2013, 04:18 PM   #243
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Originally Posted by sgoldste01 View Post
Please explain what your research revealed about this NAPA filter. How do you know that the high bypass pressure is appropriate for our Imprezas? What do you know about the filter media? How do you know that, in this case, bigger is better?

I don't know if others agree, but I'm not willing to simply assume that a larger sized filter with a high bypass pressure is appropriate for our cars without understanding these details better.
Same specs as OEM only larger capacity, used NAPA golds for years, made by WIX. Need to see if they make a NAPA platinum for it yet though $12 is a bit steep unless you catch it during a NAPA oil filter sale they have once a year.
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Old 10-11-2013, 08:43 AM   #244
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Oil flows differently through paper (cellulose) and synthetic media. Paper media is more restrictive than synthetic media, so 23psi in paper is not the same as 23psi in synthetic. In other words, under the same conditions with both filters, they may actually operate the same way. I don't think the bypass valve is going to have that much of an impact.



Wix's filter is 28 psi (and also paper)....so why is more better than less? Seems to me a lower setting would be better than a higher setting, i.e. unfiltered oil flowing through your engine is better than no oil!

Aren't the flow rate and bypass pressure two different things?
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Old 10-11-2013, 11:12 AM   #245
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Less restrictive media will flow more oil at the same pressure delta than more restrictive media. So will a filter that has more area of the same media at the same pressure.
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Old 10-11-2013, 11:45 AM   #246
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I got 15 160 filters off ebay when I bought the car - glad I did
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Old 10-11-2013, 07:08 PM   #247
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sooo.. what if you get a M1 or Fram XG filter with bypass rate at 13ish BPV psi. what could happen?

I just dislike paper filter. I like synthetic.
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Old 10-11-2013, 08:28 PM   #248
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Why are the TR filters so sought after? I can't find any specs on them at all.

I don't see any reason to dislike paper media. The most efficient full-flow filter I'm aware of is the PureOne with paper media and 100% efficiency at 25 microns. Purolator's own synthetic can't touch it. Neither can Fram, Mobil1, Wix...
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Old 10-11-2013, 10:51 PM   #249
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Why are the TR filters so sought after? I can't find any specs on them at all.

I don't see any reason to dislike paper media. The most efficient full-flow filter I'm aware of is the PureOne with paper media and 100% efficiency at 25 microns. Purolator's own synthetic can't touch it. Neither can Fram, Mobil1, Wix...
I think because they are a high quality filter, I think historically they are highly sought after
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Old 10-15-2013, 02:54 AM   #250
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Originally Posted by sgoldste01 View Post
Please explain what your research revealed about this NAPA filter. How do you know that the high bypass pressure is appropriate for our Imprezas? What do you know about the filter media? How do you know that, in this case, bigger is better?

I don't know if others agree, but I'm not willing to simply assume that a larger sized filter with a high bypass pressure is appropriate for our cars without understanding these details better.
what are the part's of these filters so we can research the specs.
out of all these filters that everyone is getting, none of them meet the OEM spec of 23psi for the bypass relief. just the roki. anyone have any issues with the others?
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