Chuck -

I use Mobil 1 in my Toyota Celica which now has 150,000 miles on it. The engine is as clean as a whistle. I
change oil every 25,000, change filter every 5,000 and top up a\oil as neccessary. I am switching to Del-Vac
(the Mobil diesel synthetic) in my '94 Ram turbo Cummins at the next oil change. I should be able to go all
year plenty OK. I know many people disagree with this. That's OK. I can only say that all the cars I have
used Mobil 1 in have gone to the 150,000 mile mark with no engine damage, using the 25,000 oil change,
5,000 filter change schedule. According to Mobil
(http://www.mobil.com/business/cvl/onhighway/product_services/delvac1/index.html) this is OK. YMMV. I
feel comfortable with this.

Check out the web address and make up your own mine. BTW, I have been using Mobil 1 for 20 years.

L8R

On Sun, 2 May 1999 15:47:07 -0400, Chuck wrote:

>Does anyone use synthetic oil or gear lube? I am rebuilding a 1965 26'
>Overlander that was in a fire. In my Ram only synthetic oil will be used to
>extend oil change intervals and get better fuel mileage.