Rare exotic engines may need 10w60 according to single youtube channel

[OVERKILL]

2000+hp and 6-sec quarter mile times say otherwise. Not to mention some very fast lap times and plenty of race wins in various classes.

So is this only at far beyond normal power levels then? Perhaps that should also be in the OP or subject? LOL. Top Fuel engines make like 9,000+HP, but I'm not sure what they have in the pan is in any way relevant to what I put in my daily driver.

Some of the big Pro Stock engines make >2,000HP on motor, would be interesting to know (though again, probably not overly useful or relevant) what they run. @High Performance Lubricants probably knows.

 

[Cujet]

So is this only at far beyond normal power levels then? Perhaps that should also be in the OP or subject? LOL. Top Fuel engines make like 9,000+HP, but I'm not sure what they have in the pan is in any way relevant to what I put in my daily driver.

Some of the big Pro Stock engines make >2,000HP on motor, would be interesting to know (though again, probably not overly useful or relevant) what they run. @High Performance Lubricants probably knows.

One interesting way to look at this is by HP per cylinder. Certainly, these guys will show their most powerful 2000HP drag race example. The guys who drive the same engines on the street are often at a real world 80-90HP per cylinder. As it is difficult on readily available 93 octane, to do much better. The E85 street guys will be up over 100HP per cylinder.

In both cases, hard street use can necessitate a robust oil, as oil temps can be difficult to manage in hot, slow speed conditions.

In my turbocharged, high output engines, 15W-50 was a minimum. And M1, 20W-50 V-Twin oil was a step up. We could get faster times with low viscosity oils, but always at the expense of rod bearing life.

 

[OVERKILL]

One interesting way to look at this is by HP per cylinder. Certainly, these guys will show their most powerful 2000HP drag race example. The guys who drive the same engines on the street are often at a real world 80-90HP per cylinder. As it is difficult on readily available 93 octane, to do much better. The E85 street guys will be up over 100HP per cylinder.

In both cases, hard street use can necessitate a robust oil, as oil temps can be difficult to manage in hot, slow speed conditions.

In my turbocharged, high output engines, 15W-50 was a minimum. And M1, 20W-50 V-Twin oil was a step up. We could get faster times with low viscosity oils, but always at the expense of rod bearing life.

Not to mention fuel dilution becomes a bit of an issue as tunes are typically made "safe" (a little extra enrichment) so things don't knock and blow up.

That said, it'll depend on engine family too. My buddy with the TT Termi was making around 850 to the tires on pump gas and that's >100HP/cylinder (185HP/L) and was running M1 5W-30 IIRC. But that's a factory boosted engine with an insanely rigid bottom end.

 

[PoorMans180SX]

So is this only at far beyond normal power levels then? Perhaps that should also be in the OP or subject? LOL. Top Fuel engines make like 9,000+HP, but I'm not sure what they have in the pan is in any way relevant to what I put in my daily driver.

Some of the big Pro Stock engines make >2,000HP on motor, would be interesting to know (though again, probably not overly useful or relevant) what they run. @High Performance Lubricants probably knows.

Nope, recommended for stock bottom ends as well.

 

[OVERKILL]

Nope, recommended for stock bottom ends as well.

Well, that seems a bit silly, if MOFT is already adequate, going heavier isn't going to do anything but waste power via pumping losses.

 

[kschachn]

Well, that seems a bit silly, if MOFT is already adequate, going heavier isn't going to do anything but waste power via pumping losses.

Recommendations aren't always based on objective facts

 

[Astro14]

Nope, recommended for stock bottom ends as well.

Yeah, Top Fuel and the like use a 5W or a 3W.

2,000+ HP, sure, but the oil temperatures are low. So they achieve the MOFT With very, very thin oils, minimizing horsepower loses through drag.

Big differences between race and street.