I use the Shell Rotella T in most of my diesels. It's a top rated dino oil and I can get it at a good price at almost any Wal-mart.

TimK

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85' MB 300D Turbo
85' GMC Suburban 6.5L Diesel Turbo
2000 VW Beetle 1.9L TDI Diesel Turbo
67' Land Rover 2.5L Diesel - No turbo

So what do you do when it's so cold out your fuel gels? Smear some on toast and have another cup of coffee until it warms up outside.