Huh, and after rereading oldsinner's post maybe I'd be wise to keep using the stock tank for VO since it already has run 10k+ of VO in there... judging by the gunk around the fill cap it should be grim but I've recently checked the tank strainer and it is pristine. Maybe because it stays submerged. There may be a lot of crud higher up on the sides of the tank which would come off into diesel. (Is diesel a mild solvent for this stuff or something?)

Hmm. I'll see if I can mate up the coolant lines to the stock tank like Greg does with his second tank. This would save me a trip to the junkyard anyway.

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1984 300D Turbo 350K 50K WVO (two tank) "Maeby"