I'm on my last free dealer oil change. I have Pennzoil Platinum 10w30 and and an OEM filter waiting for the next oil change.

 

goto amsoil.com and search comparitive motor oil test.

 

If you have a loose clearance engine, yes, you can run a 20W-50. If you are running a tight or stock clearance set up, any of the 30 weights, which is what Mits Recommends, is the way to go.

skold... you are a mixed up child... read what the WIX article says... I have just sent an email to the Admin about your advertising without paying...


Doc

 

Here is my .02 cents...I run Silkolene (Fuchs) Pro S 10/50 for the engine and Silktran-Syn5 for the trans and diffs in the Evo with 14K on the clock with no problems... In the N/A Subi I run the Pro R 15/50 engine oil and the Syn5 in the trans and diffs for the last 65K miles (94K on the Subi) and have had no problems. Pete

 

who else on here thinks im "invading: oildoc's space, all im posting is MY opinion. and he has been nothing but rude.

 

everyone keep an eye on this post,

I asked ETS what they run in their car, and what is their opinion.

https://www.evolutionm.net/forums/sh...d.php?t=327260

 

Ok, but realize that what is necessary to stand up to 10k+ rpm worth of shear isn't usually what one should opt for street use. Dedicated race motors like Paul's use different tolerances and clearances to account for rpm and heat, are not built for street longevity, and require different oil (e.g. 60 weight racing oil).

Use of a heavy oil in a street application may actually accelerate wear and will reduce fuel economy. In some cases, a heavier grade is necessary as opposed to the factory 10w-30, but this is more so an exception than rule.

 

Another note worth mentioning is that no excessive or unusual wear patterns were evident with my motor that had 60k miles, saw 500whp and methanol use. The motor never saw anything but Mobil 1 10w-30, and never saw the high side of 8000rpm.

For a motor with forged pistons and slightly looser tolerances that is going to be subjected to higher rpm, stiff valve spring pressures and extended abuse, a slightly heavier oil with more ZDDP may be advantageous over the long haul. For 95% of those out there however, probably not.

 

so ted would you agree with what i said, amsoils SSO 0-w30 and 10-w30 ATM for ave. modded cars, and amsoils TRO 20-w50 for fully built motors, that dont see many everyday driving miles, that is all that i was saying and that a filter that filters microns as small as 15 microns with a 98.7 % eff rating IN MY OPINION, is 10x better than one that filters 10-12 microns, at a 80- 90% eff rating.

 

https://www.evolutionm.net/forums/sh...d.php?t=327260



ETS Tom

Vendor Sales Rating: (36)




Join Date: Mar 2007
Location: La Center, WA


Drives: '05 EVO
Posts: 731


Lucas from English Racing runs the Amsoil 20w50 in Paul's EVO

Tom
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669whp stock internals record EVO - with nitrous - tuned by Jason @ PSI
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AIM: ETS Tom

 

How many 1000rwhp EVO's are in the USA? 1% maybe...I think your missing the point. 30w would suit 90% of the EVO's on the street. Sounds like you have a garage full of 20w50 your trying to push.

 

Ted, thank you for your post.

Maybe I didn't word my post properly or something that made it hard for some to understand. But you have posted exactly what I was saying about a Higher Viscosity oil in a loose clearance engine.

As far as the ZDDP, it was reduced/removed from most oils as it was not deemed necessary as most engines today utilize a roller lifter. The ZDDP was the "Sacrificial Lamb" for the contact area where the flat lifter contacted the lobe.

AMSOIL has enough Anti-Wear additives to handle this. It is quite a big deal on American Iron engines used in Hot Rods and has really spurred quite a bit of interest in AMSOIL Products.

Doc

 

i total agree there is only a few 1000 awhp evos, but i have it listed as an oil to uses, and Oildoc freaked on me. i think this whole thing comes down to when you type you cant get out what your trying to say or mean.

so like i had listed befor i removed it

SSO 0-w30 is the best oil for most evos,
then ATM 10-w30
and if your poor and want a good oil that is a lil cheaper or about the same prices as mobil uses the XL 10-w30

and it your making like 800 + awhp uses 20w-50 race oil.

 

skold... I "freaked" as you call it, because you are giving out false information.

The differences in oil don't make much difference whether you are 200 HP or 1000 HP but how the engine is set up. If it is set with OEM Tolerances, 20W-50 is considered too thick for various reasons. One is possible oil starvation and another is that it builds more heat, much less, a loss of HP.

The build of the motor will dictate more on what oil to use than the amount of HP.

Just as the misinformation you posted about the filters. The EAO Filters will not flow 10 times what a WIX does, that is why the WIX filter is recommended for High Performance applications. You also post that the WIX filter is 10-12 Micron and that is not what the article says. Nowhere does it say that the WIX is 94% Efficient, it says 94% more efficient than most other filters in capturing particles in the 10-12 Micron Range.

Your direct misreguard for factual information only hurts reputable Dealers that do this for a living and have a Passion not only for the AMSOIL Products, but truly want to help their customers in the best choices for them, not just help the pocketbook of the Dealer.

If you care to pay for an ad here on EVOm and support the community, I would welcome you with open arms, as long as you post facts and not what your feelings are.

I hope this ends this conversation.

Doc

 

Yes, the oil viscosity should always be suited toward the build tolerances and anticipated use. It is (mostly) that simple.

Yes, it remains more of a factor with engines that use conventional type slider followers or cam/shim/bucket type valvetrains. FWIW however, the ZDDP hasn't been reduced/removed from all oils. For example, the new "SM" rated 30 weight oils typically retain about 800ppm (no problem for most modern cars), while certain heavier oils like Mobil 1 0w-40 and 15w-50 retain 1000 and 1200ppm respectively. You'll find that certain Redline grades also retain the favored 1200ppm for the aforementioned engine types. But I digress, as this shouldn't really affect us, although I'd opt for it, given a choice where extreme use is anticipated.

As for filters, I can't really comment. I've always been skeptical of filter manufacturers claims, so I tend not to take them at face value. Independent third party testing would be the only thing I'd trust.