Dan Wendling

Reading the Mobil literature on their racing oil products makes me want to use them in my TVS2300 LS3. Only down side seems to be that they might kill the cats sooner than the M1 15w50 I am using now.

So other than being a good citizen what is the down side of having your oil degrade the cats?

I live in Maryland so our emissions testing is only OBDII based so no exhaust gas tests!

mr.beachcomber

Mobil quotes their racing oil's zinc content at 1850 ppm while their 5W-50 synthetic's zinc is 1200-1300 ppm according to their literature. What levels of zinc are recommended for your turbocharger installation by the manufacturer?

Having to replace your cats on a regular basis isn't inexpensive and using racing oil with a recommended OCI of 500 miles is expensive too. Plus the fact you may void your engine warranty also since Mobil specifically states that its racing oils should not be used in street-driven engines.

AU N EGL

An Mobil repetitiveness recommended 15-W50 to us at our Corvette HPDE

SouthernSon

Translation, "A Mobil 1 representative said to use 15w-50."

Tom used to write Norm Crosby's material for his stand-ups.

L98Terror

Not to mention it's extremely expensive, I recall it being $20+ per quart, that's almost $300 per change with a dry sump. In a street driven car it seems buying a new engine would be cheaper in the long run.

Painrace

TOM knows! Use 10 W 50 for track use engines or a similar product from someone like Amsoil.

Jim

mr.beachcomber

Thanks! I couldn't find my Little Orphan Annie decoder ring this morning.

AU N EGL

No coffee that morning

Exotica

Aren't the racing oils missing the detergents used in street oil? I don't think racing oils suspend the dirt and micro-debris the way street oil does.

If you change your oil often enough (read weekly) it might not matter, but if you go any length of time between oil changes then I believe you would actually experience more wear and tear in the long run.

AU N EGL

YES somewhat

Racing oils should be changed each event / weekend.
M1 racing oil is only used for 600 miles if that.
M1 "0" wt is a qualifying oil for only a few laps of use, then changed

Other options:
Red Line 40 wt
Amsoil 40 wt racing oil,
Joe Gibbs Racing oils would be good options too