engine oil

[dickboxers]

i came across 10 free gallons of royal purple 5w20. Does anyone think this would be ok to use in my 351pmc.

[michael hunter]

I have been using Mobil 1 15w50 in my 89 351 since break in . My brother in law raves about the royal purple.

[jzelt]

Have you been running full synthetic oil prior? (Plan to continue if you haven't already?).
My concern would be the weight of the oil (w20) as that seems a little thin and with the heat the motor creates...

[Rusty Griswold]

Have you been running full synthetic oil prior? (Plan to continue if you haven't already?).
My concern would be the weight of the oil (w20) as that seems a little thin and with the heat the motor creates...

Agree here, use it in your Car