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Old 03-11-2011, 06:40 PM   #1 (permalink)
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Default turbo oil recommendation...

I noticed in the install instructions AGP recommends 20-50w oil. I think it's too thick especially when early and late summer night time temps are so low here in Minnesota. Is it as important on a DBB turbo seeing theirs less rotating friction? Is an oil like royal purple a good alternative with a lighter weight?
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Old 03-11-2011, 09:46 PM   #2 (permalink)
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Royal purple is a lot of hype if you ask me. There's lots of other oils that work better for turbos.

What you want in an oil for a turbo is something that doesn't burn off in high temps and doesn't shear down to a lighter weight at high temps and high load. Most PDS (product data sheets) will have these specs for the oils listed as HTHS score (lower is better) and NOACK volatility test (lower is better). Synthetics are best for this and here are my favourites.

I like the Redline oils (best performance), Pennzoil Platinum and Ultra 5w-40 Euro (meets Euro turbo specs for peace of mind), Mobil 10w-40 High Mileage (most widely available), Shell Rotella 15w-40 (best value).

They're all rated for low scores in HTHS (high temperature, high shear) testing and have lots of good user results. Choose the weight based on your oil temps and have fun.
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Old 03-12-2011, 01:58 AM   #3 (permalink)
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Quote: Originally Posted by Alligatorman View Post
Royal purple is a lot of hype if you ask me. There's lots of other oils that work better for turbos.

What you want in an oil for a turbo is something that doesn't burn off in high temps and doesn't shear down to a lighter weight at high temps and high load. Most PDS (product data sheets) will have these specs for the oils listed as HTHS score (lower is better) and NOACK volatility test (lower is better). Synthetics are best for this and here are my favourites.

I like the Redline oils (best performance), Pennzoil Platinum and Ultra 5w-40 Euro (meets Euro turbo specs for peace of mind), Mobil 10w-40 High Mileage (most widely available), Shell Rotella 15w-40 (best value).

They're all rated for low scores in HTHS (high temperature, high shear) testing and have lots of good user results. Choose the weight based on your oil temps and have fun.

Good info thanks. I just came across this, I realize it doesn't mean a lot seeing their are a lot of variables, its a dyno shoot out between 5 different brands. I found it interesting.
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Old 03-12-2011, 02:42 AM   #4 (permalink)
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never heard of that Nulon oil before.............
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Old 03-12-2011, 05:18 AM   #5 (permalink)
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I would run the oils we recommend. If you're concerned about running 20W50 in the winter, step down to a 15W40.

Royal Purple has good oil, it's their XPR stuff, which is high dollar. Brad Penn or VR1 are much more affordable, and a better oil for our application.
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Old 03-12-2011, 05:25 AM   #6 (permalink)
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Quote: Originally Posted by stealth2669 View Post
I noticed in the install instructions AGP recommends 20-50w oil. I think it's too thick especially when early and late summer night time temps are so low here in Minnesota. Is it as important on a DBB turbo seeing theirs less rotating friction? Is an oil like royal purple a good alternative with a lighter weight?

I would listen to the instructions and Ben. There is a reason for this, im sure they didn't slap it in the instructions for the hell of it. Leave it for the experts to make those decisions.
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Old 03-12-2011, 05:33 AM   #7 (permalink)
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Quote: Originally Posted by stealth2669 View Post
Good info thanks. I just came across this, I realize it doesn't mean a lot seeing their are a lot of variables, its a dyno shoot out between 5 different brands. I found it interesting. YouTube - Engine Oil Dyno Shootout on EVO

Great vid man. Thanks for showing.
A difference of about 15hp between the Mobile 1 and Nulon. That's pretty major.

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Old 03-12-2011, 10:33 AM   #8 (permalink)
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Quote: Originally Posted by Ben@AGP View Post
I would run the oils we recommend. If you're concerned about running 20W50 in the winter, step down to a 15W40.

Royal Purple has good oil, it's their XPR stuff, which is high dollar. Brad Penn or VR1 are much more affordable, and a better oil for our application.

That's what I was looking for, thanks Ben! Turbo should be here monday
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Old 03-12-2011, 10:36 AM   #9 (permalink)
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Quote: Originally Posted by mole' View Post
never heard of that Nulon oil before.............

Its made in the outback, silly ausies.
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Old 03-12-2011, 09:27 PM   #10 (permalink)
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I ordered up a case of 15w-40 Brad Penn, after a lot of reading, I now understand why agp endorses them. I should've just obeyed AGP's instructions.
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Old 03-13-2011, 12:03 PM   #11 (permalink)
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i run vr1 its great too
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Old 03-13-2011, 04:52 PM   #12 (permalink)
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^^Are you running synthetic vr1? What weight?
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Old 03-13-2011, 07:50 PM   #13 (permalink)
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Quote: Originally Posted by stealth2669 View Post
I ordered up a case of 15w-40 Brad Penn, after a lot of reading, I now understand why agp endorses them. I should've just obeyed AGP's instructions.

did you order the penn-grade 1 high peformance oil or premium penn-grade motor oil?

Both come in 20w-50 and 15w-40 olny comes in grade 1 and premium offers a 10w-40... just wanna make sure I have the proper oil before i order my kit and install.

This is what confuses me on which type to get:

Please Note:
Penn Grade 1 High Performance Oils contain high zinc and phosphorous additive concentrations which can be detrimental to cars and trucks with catalytic converters. For our Brad Penn Synthetic Blend and Premium Passenger Car Motor oils more suitable for use in vehicles with catalytic converters, please click here. Always consult your owner's manual for proper oil selection.
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Old 03-14-2011, 04:46 AM   #14 (permalink)
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I got grade1, I don't run a cat, I would've ran 20-50 but it's too cold here a majority of the time.
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Old 03-14-2011, 11:05 AM   #15 (permalink)
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after being on my second turbo, yeah. i quickly ended up using Amsoil 20/50. nothing else has gone into it since then and so far no issues.
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