The Honda team et al does not use mobile one you buy in walmart at 10W-30W.

There is NO ONE in serious racing that uses anything but specially formulated race oil that you can't normally buy.

Point is....the stuff you buy on the shelf burns in 90% of all cars on the road. Up until about 4 or 5 years ago it also wreaked havoc on gaskets..

Try and factor that in when you think you're benefiting from mobile one and you're out playing racer and just blew a head gasket.

I personally believe you'll get more life out of your car if you simply pay the extra to run it on high test constantly. I can give you some reports on that if you're really interested.

A little known secret is that ALL motors run cooler, have more power using high test.