FE Power Forums

FE Power Forums => FE Technical Forum => Topic started by: BigBlockFE on February 11, 2017, 12:10:19 AM

Title: Oil. 10/30 vs 10/40 w
Post by: BigBlockFE on February 11, 2017, 12:10:19 AM

I have an all aluminum 496 fe. I use brad penn oil. Would you recommend the 10/30 or the 10/40 or does it matter. I do some road racing and auto x  about 70% street 30% racing. I live in Las Vegas.

Title: Re: Oil. 10/30 vs 10/40 w
Post by: TorinoBP88 on February 11, 2017, 03:44:46 AM

Las Vegas, lighter oil in winter, heavier in summer, it's hot there, but maybe even 20-50 for autocross or road racing.  Do you have an oil cooler?

Title: Re: Oil. 10/30 vs 10/40 w
Post by: BigBlockFE on February 11, 2017, 06:09:18 AM

I have an oil cooler but do not use it.

Title: Re: Oil. 10/30 vs 10/40 w
Post by: jayb on February 11, 2017, 10:19:36 AM

I've been using 10W-30 on just about everything these days, unless the bearing clearances are really large.

Title: Re: Oil. 10/30 vs 10/40 w
Post by: BigBlockFE on February 11, 2017, 11:43:28 AM

Thanks jay.

Title: Re: Oil. 10/30 vs 10/40 w
Post by: Joe-JDC on February 11, 2017, 12:54:48 PM

Those heavier oils rob horsepower, and will wear the gear on the camshaft quicker over time.  10-30 is a very good all around oil for modern performance engines.  Joe-JDC

Title: Re: Oil. 10/30 vs 10/40 w
Post by: TorinoBP88 on February 11, 2017, 01:06:24 PM

True, they Rob some power, but if you are beating on an engine, a little extra cushion when hot is peace of mind for me.  That is why Valvoline still makes 50w racing oil for road racing.