80-90 weight gear oil is fine. Refer to Workshop Manual G:05:01 for the full procedure. You do have a Workshop Manual don't you? If not make put it on your next list of things to order from a Delorean vender. The 2 things to this are having the "special" wrench and draining the fluid after driving the car so the old fluid can drain out easier. Another thing you could do is replace the stock drain plug with a magnetic one if it hasn't been changed yet. David Teitelbaum vin 10757 --- In dmcnews@xxxxxxxxxxxxxxx, "Adam <acprice1@xxxx>" <acprice1@xxxx> wrote: > Hello, I have an automatic and I want to change the final drive > fluid. The technical information manual that i have says to use GL-5, > but it doesnt give a weight. What weight should I use for the final > drive? Is 80-90 okay? Thanks. > > Adam 16683