What engine oil should I use?

[casey barlow <dmc1288mph@xxxx>]

Hi List, I drive my Delorean almost every day, and I
wanted to know what is the best weight of engine oil
to use. Iam running 20W-50 Castrol right now, should I
run a 10W-40,10W-30 or is the 20W-50 alright? I live
in lower Alabama and my car has about 150,000 miles
and is still running strong.Iam not sure what the
owner before me ran in the car. I am also running a
lucas oil additive. Thanks, Casey VIN# 3270

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