Oil recommendation for a 1000 horsepower supra!

[alpha6164]

I have a 1995 Toyota Supra with probably over $50K in engine/turbo modifications. The shortblock/head is fully built with decent tolerances. The head has +1mm valves, and high lift crane cams (~11mm). The car will see 20-35psi of boost and will be seeing upwards of 8000rpm.

What would be the best oil for this application. Cost is really not an issue. The oil will be changed every 2500miles. This will be due to the C16 leaded race gas use which will dirty up the oil a lot faster. I would not hesitate paying $10-$15/quart for the "BEST" if there is such a thing. I have read quite a bit on this site, but still confused. I was planning to use the M1 5w-30 but from reading it seems that its not fully synthetic???

I would appreciate all help picking the best oil for a high boost/turbo/ type application.

 

[Brogy]

From what I hear redline oil would be the best for your application. Or vavoline racing oil. Dont go on my word alone, wait for others to chime in. I just wanted to say nice car

.

 

[G-MAN]

Brad Penn's Penn-Grade 1 racing oil in 20w50.

 

[CrashVector]

NOW we're talking about something I know a little about.

I own a 1955 BelAire with a ZZ3 FastBurn crate engine it. Twin Garrett T1 turbos.

I run 20W50 in it, and have been told that something even heavier would be acceptable.

The the Supra's case, I'm assuming your engine's redline is far above the 6K of my belaire, so you would need something more than "standard" racing oil.

I looked up G-Man's suggestion. I would follow it.

 

[alpha6164]

Quote:

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Brad Penn's Penn-Grade 1 racing oil in 20w50.

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Not to question, but more informational. I thought after the break-in period, that we still wanted fully synthetic oil. Isnt the Brad Penn oil non-synthetic?

 

[G-MAN]

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Quote:

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Brad Penn's Penn-Grade 1 racing oil in 20w50.

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Not to question, but more informational. I thought after the break-in period, that we still wanted fully synthetic oil. Isnt the Brad Penn oil non-synthetic?

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This oil is a synthetic blend with about 20% PAO and the rest pure Penn grade Group I. It has a killer add pack and its ability to resist the effects of fuel dilution is legendary in the racing community. It also has an unbelievable HTHS of 6.2.

I'm using it in my Harley.

 

[Focus2069]

Where would you find such oil?

and how much, lol.

 

[G-MAN]

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Where would you find such oil?

and how much, lol.

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You can call or e-mail Brad Penn to find the distributor closest to you. There are online sites that sell it. Just use Google.

 

[gtx510]

Unless you've got large bearing clearances I'd try a synthetic 5W40. Shell Rotella, M1 TDT (Delvac), Redline, Motul, Amsoil, Liqui-Moly, etc.

 

[TurboTravis]

Quote:

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I have a 1995 Toyota Supra with probably over $50K in engine/turbo modifications. The shortblock/head is fully built with decent tolerances. The head has +1mm valves, and high lift crane cams (~11mm). The car will see 20-35psi of boost and will be seeing upwards of 8000rpm.

What would be the best oil for this application. Cost is really not an issue. The oil will be changed every 2500miles. This will be due to the C16 leaded race gas use which will dirty up the oil a lot faster. I would not hesitate paying $10-$15/quart for the "BEST" if there is such a thing. I have read quite a bit on this site, but still confused. I was planning to use the M1 5w-30 but from reading it seems that its not fully synthetic???

I would appreciate all help picking the best oil for a high boost/turbo/ type application.

---

I used to own a 900HP Supra and ran Mobil 1 for years with no problems. If I had to do it all over again I'd probably run Rotella 5W-40 or Amsoil 5-30 HDD diesel oil. The key with high HP cars is to keep a eye on the physical condition of the oil and not just the milage.



T

 

[Pablo]

If you want a 20W-50 (which I think might be a bit viscous as a blend or dino) - I would use the full synthetic Amsoil Racing 20W-50 with beyond excellent flow: Amsoil 20W-50 TRO Racing Oil

At the other end of the spectrum, but offering excellent protection is Amsoil 10W-30/SAE 30 Oil Killer additive package and lower race viscosity.

 

[alpha6164]

Quote:

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Unless you've got large bearing clearances I'd try a synthetic 5W40. Shell Rotella, M1 TDT (Delvac), Redline, Motul, Amsoil, Liqui-Moly, etc.

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Here are my clearance specs:

Main bearing clearance = 2.2 thou
Thrust clearance= 4 thou
Connecting rod clearance= 1.6-2.2 thou
Piston-wall clearance= 4 thou


I am really liking the Amsoil TRO 2000 series 20w-50 oil, i just want to make sure that its not too thick for my application.

Also whatever oil i choose will be used after a 1500mile break in period. What non-synthetic oil would you guys recommend for the break in period?

 

[G-MAN]

Quote:

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Also whatever oil i choose will be used after a 1500mile break in period. What non-synthetic oil would you guys recommend for the break in period?

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If you decide to use Penn-Grade 1, then use Brad Penn's Break-In oil during the break-in period.

 

[benjamming]

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The oil will be changed every 2500miles.

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Before you just go willy-nilly into a choice as vital as the oil in a not-so-cheap car & money is not a roadblock, I would consult with Terry Dyson. He will steer you in the right direction & you will be amazed at his abilities & he can go as deep as you want for extra money. He's a hired brain!

 

[Syntec-Man]

use any castrol syntec product 0w 30 Gc would be the best for that car

 

[bruce381]

for the turbo heat Redline Only call and get a recomendation at short drians a race oil maybe Ok.
bruce

 

[lazaro]

Quote:

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Quote:

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Unless you've got large bearing clearances I'd try a synthetic 5W40. Shell Rotella, M1 TDT (Delvac), Redline, Motul, Amsoil, Liqui-Moly, etc.

---

Here are my clearance specs:

Main bearing clearance = 2.2 thou
Thrust clearance= 4 thou
Connecting rod clearance= 1.6-2.2 thou
Piston-wall clearance= 4 thou


I am really liking the Amsoil TRO 2000 series 20w-50 oil, i just want to make sure that its not too thick for my application.

Also whatever oil i choose will be used after a 1500mile break in period. What non-synthetic oil would you guys recommend for the break in period?

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those are tight clearences to use 20w50 and why is the rod bearings different sizes? that is not too swift.
thrust clearence is tight too, that must be on the minimum, I would use a thinner oil like 0w30/10w40 any of the Amsoil choices would be good, my choice would be HDD 5w30 diesel oil. I wouldn't chance my engine to any other choice of oil.

 

[alpha6164]

I am leaning towards the two choices:

Either motorcycle oils such as the Amsoil 10w-40 MCF or the Mobil MX4T (4T). They seem to have a higher ZDDP than their car autoparts very nice HT/HS. My car has no cats, so no emission stuff to worry about.

The other choice i am considering is the Amsoil AME 15w-40 Heavy duty marine and diesel synthetic. It has a great additive package, good detergents, high TBN and HT/HS of 4.4.

What do you guys think of the above choices. I know the motorcycle oils do not have friction modifiers, is that an issue?

 

[Gremil]

Locally there is an AMC Javelin AMX that has an engine build by legendary AMC performance engine builder Herman Lewis. This engine is an actual AMC engine that develops around 1,000 horsepower at the engine. The car itself is a car built by AMC made mostly of fiberglass that probably was used or meant to be used in Trans AM or similar racing and now has been converted to a drag car. He calls it "Rare Breed" because of it being AMC powered.

The motor oil he uses is AMSOIL Series 2000 20W-50 racing oil. He has had experiences that solidify his belief in this product. Here's why:
He had a defective distributor gear and after replacing it he ran a petroleum 20W-50 racing oil temporarily to clean up the engine before switching back to the AMSOIL Series 2000 Racing Oil. His ET dropped consistently about 7 MPH top end and close to 1/2 second for the quarter mile. Every run was consistent but less than before. After he switched back to the AMSOIL Series 2000 20W-50 Racing oil his car went back to the old top speed and ET and was consistent at those speeds. Had to be the oil.

You engine sounds like it has the same problems as he does, with using racing fuel and very rich. With the 20W-50 viscosity you have enough viscosity built in for some fuel dillution so as not to have engine wear or damage.

That's my recommendation. Good luck!

 

[lazaro]

Quote:

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Locally there is an AMC Javelin AMX that has an engine build by legendary AMC performance engine builder Herman Lewis. This engine is an actual AMC engine that develops around 1,000 horsepower at the engine. The car itself is a car built by AMC made mostly of fiberglass that probably was used or meant to be used in Trans AM or similar racing and now has been converted to a drag car. He calls it "Rare Breed" because of it being AMC powered.

The motor oil he uses is AMSOIL Series 2000 20W-50 racing oil. He has had experiences that solidify his belief in this product. Here's why:
He had a defective distributor gear and after replacing it he ran a petroleum 20W-50 racing oil temporarily to clean up the engine before switching back to the AMSOIL Series 2000 Racing Oil. His ET dropped consistently about 7 MPH top end and close to 1/2 second for the quarter mile. Every run was consistent but less than before. After he switched back to the AMSOIL Series 2000 20W-50 Racing oil his car went back to the old top speed and ET and was consistent at those speeds. Had to be the oil.

You engine sounds like it has the same problems as he does, with using racing fuel and very rich. With the 20W-50 viscosity you have enough viscosity built in for some fuel dillution so as not to have engine wear or damage.

That's my recommendation. Good luck!

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you dont think the 20w50 is too thick with those posted clearences?
what clearences is that AMC motor? is it N/A?
Im sure it could be a lil looser but who knows?
I had an issue with tight clearence and 20w50 2000 so now I use ASL in that application