Which one is best to use in my 1983 300D Turbo with 150000 miles? After a search on this web site I find alot of people use the Mobil 1 Delvac Synthetic, but it is 5w40. The Mobil 1300 Delvac Super is 15w40..They are both Delvac ....Thanks

[Edited by GA-W123 Diesel on 02-10-2001 at 08:17 PM]

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2000 Ford 7.3 Powerstroke 4x4
2006 Mazda Tribute
1983 Black 300 D (donated to charity)
1993 Teal 300 D (160K) Sold
"I love the smell of burnt diesel fuel in the morning, it smells like ....VICTORY"

Semper Fidelis
USMC 1973-1976