Oil Recomendation for Supercharged Engine

[A302]

I have a Coyote with a Roush blower making 561rwhp. I'm looking for an oil recommendation for this engine? The car is a street car that goes to the drag strip. What oil weight would be good for this use? Thanks

 

[SID297]

The 2012 SVTP GT makes 576 RWHP with a Magnuson blower and we run Royal Purple 5w30 HPS in it. Check out these threads:

http://www.svtperformance.com/forum...il-futures-index-royal-purple-hps-review.html

http://www.svtperformance.com/forum...-checks-out-blackstone-labs-oil-analysis.html

 

[UnleashedBeast]

What's the virgin TBN of Royal Purple HPS? I have yet to see a spec sheet.

Jimmy?

 

[1hot281]

What's the virgin TBN of Royal Purple HPS? I have yet to see a spec sheet.

Jimmy?

Also wondering what the virgin cSt@100C is, compared to the 8.51cSt in the report.

 

[UnleashedBeast]

 

[Boomer182]

I trust my cars to the original formula Mobil 1 syn. I do not like the Extended performance. I have tried royal purple in my LS1 Z, I was not happy with the drop in oil pressure. I am really debating switching to Amsoil, even though my first experience did not end well. I really can't blame the oil now I guess, it was a stupid over rev and it spun a barring.

 

[UnleashedBeast]

I trust my cars to the original formula Mobil 1 syn. I do not like the Extended performance.

How could you not like it, it's a superior formulation. However, almost certainly still contains hydrocracked base stocks like their mainline product, but possibly in lower percentages.

I have tried royal purple in my LS1 Z, I was not happy with the drop in oil pressure.

How much of an oil pressure drop? That's typical when you use a true synthetic base stock, since it has a lower frictional coefficient. Also, with better cold flow properties, cold idle pressure will most likely be the greatest difference you are seeing.

I am really debating switching to Amsoil, even though my first experience did not end well. I really can't blame the oil now I guess, it was a stupid over rev and it spun a barring.

What formulation were you using, and what year did this happen?

 

[TVSCobra]

Mobil1 0w-40 here.