what oil are you boosted guys using

[Amadeus]

No one likes German Castrol 0W-30 ?

[mswhong]

sorry to threadjack, but what should we use if running E85? 10-40?

[Dipstik-sportech]

If you're running e85 exclusively I'd run a e85 compatible oil such as Brad Penn 10w40. E85 has been known to break down regular oil although I'm not sure what exactly it does to it.

The Frozen North

[evo4g63]

I run Valvoline Syn-power 0w20. No issues here, although I still change my oil every 3k or before due to not driving my car much.

[Nomed Alucard]

What is the opinion on Amsoil Dominator grades: 5w-20 or 10w-30 on E85 only setup?
Also I live in Texas where it can be low one day and hot as balls next and the stop and go traffic sucks. Would it be better to run a lighter weight oil ? I should have all my parts in to go boosted in 2 weeks. I want to make sure a fresh oil is changed and in great standings.
I have kept my oil changed every 4.5k and first oil change was at 1k miles. Been running Amsoil Signature 0w-20 since 1k mile change.

[DAMotorsports]

Originally Posted by Dipstik-sportech

If you're running e85 exclusively I'd run a e85 compatible oil such as Brad Penn 10w40. E85 has been known to break down regular oil although I'm not sure what exactly it does to it.

The Frozen North

Originally Posted by mswhong

sorry to threadjack, but what should we use if running E85? 10-40?

10-40 is to think for the clearances in the stock motor FYI

Originally Posted by Nomed Alucard

What is the opinion on Amsoil Dominator grades: 5w-20 or 10w-30 on E85 only setup?
Also I live in Texas where it can be low one day and hot as balls next and the stop and go traffic sucks. Would it be better to run a lighter weight oil ? I should have all my parts in to go boosted in 2 weeks. I want to make sure a fresh oil is changed and in great standings.
I have kept my oil changed every 4.5k and first oil change was at 1k miles. Been running Amsoil Signature 0w-20 since 1k mile change.

Purol has been tested with E85 and shows no signs of breaking down. This is yet another reason we use and recommend the oil for any vehicle. We DD/track our car in the desert area seeing summer temps of 120F+ with no problems.

[bluesubie]

Originally Posted by Nomed Alucard

What is the opinion on Amsoil Dominator grades: 5w-20 or 10w-30 on E85 only setup?
Also I live in Texas where it can be low one day and hot as balls next and the stop and go traffic sucks. Would it be better to run a lighter weight oil ? I should have all my parts in to go boosted in 2 weeks. I want to make sure a fresh oil is changed and in great standings.
I have kept my oil changed every 4.5k and first oil change was at 1k miles. Been running Amsoil Signature 0w-20 since 1k mile change.

IMO, Dominator 5W-20 should be fine and you can verify this by doing a used oil analysis at around 3,500 miles. The ZDDP level is higher than Motul 300V 0W-20 or Red Line 0W-20 (IIRC). It has a decent amount of calcium as a detergent/dispersant, but the TBN is sort of low so 4,500 mile OCI's would probably be the maximum. The viscosity at 100C is on the upper edge of a 20 grade oil, right at being a 30 grade. It also has the High Temp High Shear of a 30 grade (3.0) so oil pressure would probably be the same as many 5W-30's, but the oil probably would not shear as badly as some of them do.

RL or 300V will have a slightly higher TBN for longer oil drain intervals, although I wouldn't push any intervals on E85 much beyond 3,750 miles without a used oil analysis in your car regardless of someone claiming that an oil can handle E85. I've seen some STI Rotella T6 uoa's on E85 where the oil was spent by 4k miles. OTOH, I've seen some good uoa's on E85 as well.

Here's a VOA on Dominator 5W-20:
http://www.bobistheoilguy.com/forums/ubbthreads.php?ubb=showflat&Number=1247342

I would use Amsoil's Oil Analyzer's Inc. for your uoa. It's cheaper than Blackstone and you get TBN, oxidation, and nitration included.

-Dennis

[AVOturboworld]

I currently recommend only a good 0w20, I'm running tests on a high zinc version right now. From our engine teardowns, looking at clearances and oil paths, I wouldn't recommend anything higher except for pure track builds.

[Dipstik-sportech]

Unless u have a built engine with different clearances

The Frozen North

[lexusb3]

10-40 what I use since my first oil change

[Coheed]

I picked up a bunch of German Castrol 0w30 for $2.40/qt on clearance. I got 3 oil changes worth of oil, so I'm set for another 15k miles on oil.

I do track the car occasionally, so I figured the 30 would be better suited for some track time. I may go back to the 0w20, but I was having issues with the idle dipping pretty bad with the stock oil. Once I switched it to the 0w30 the idle dip went away. Not sure I'm sold on the 0w20 unless fuel consumption is of utmost importance.

[OICU812]

Originally Posted by Coheed

I picked up a bunch of German Castrol 0w30 for $2.40/qt on clearance. I got 3 oil changes worth of oil, so I'm set for another 15k miles on oil.

I do track the car occasionally, so I figured the 30 would be better suited for some track time. I may go back to the 0w20, but I was having issues with the idle dipping pretty bad with the stock oil. Once I switched it to the 0w30 the idle dip went away. Not sure I'm sold on the 0w20 unless fuel consumption is of utmost importance.

Sorry but what could oil weight possibly have anything to do with the idle dip? There's been a TSB for that symptom for awhile btw.

[utekineir]

Originally Posted by Coheed

I picked up a bunch of German Castrol 0w30 for $2.40/qt on clearance. I got 3 oil changes worth of oil, so I'm set for another 15k miles on oil.

I do track the car occasionally, so I figured the 30 would be better suited for some track time. I may go back to the 0w20, but I was having issues with the idle dipping pretty bad with the stock oil. Once I switched it to the 0w30 the idle dip went away. Not sure I'm sold on the 0w20 unless fuel consumption is of utmost importance.

what place had that on clearance national big box by chance? I buy it for the vws in family. Used the last of my supply last night.

[bluesubie]

Originally Posted by Coheed

I picked up a bunch of German Castrol 0w30 for $2.40/qt on clearance. I got 3 oil changes worth of oil, so I'm set for another 15k miles on oil.

I do track the car occasionally, so I figured the 30 would be better suited for some track time. I may go back to the 0w20, but I was having issues with the idle dipping pretty bad with the stock oil. Once I switched it to the 0w30 the idle dip went away. Not sure I'm sold on the 0w20 unless fuel consumption is of utmost importance.

Keep in mind that with a high HTHS and a high kinematic viscosity at operating temp, running GC isn't much different than running a light 40 grade oil.

-Dennis