5W-30 synthetic ok for D24 non-turbo?
Owners manual recommends 20W-50 (or similar) for the temps we encounter here in SoCal.
Shop put in synthetic 5W-20. (castol magnatek)
According to the chart in the manual, that isn't recommended for temps above 70F.
Should I worry about it?
Car is a 1982 245 with 106k orig miles. Motor is in great shape.
Thanks!
-Tom in SoCal
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