Yes, fuel strainer is the very large nut where the hoses come out, I think, assuming the tank is behind the rear seat and not under the trunk floor (I don't remember!). If under the floor, it's the very large nut in the middel of the tank.

Drain tank completely first, else the remaining contents will pour out on you, causing a SEVERE fire hazzard!

I'll bet there is an inch of crud in there!

Peter

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1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!