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I just got a 75 F700 with a 361 and it runs fine but was wondering what all of you guys thought about running royal purple oil in it as I dont have much experiance with this old of a vehicle.
Not sure on the royal purple as I have never used it, but your engine has a flat tappet cam, so some of the newer formulated oils with less zinc can be hard on this type of cam/lifters.
You might want to check and use a zinc additive as needed.
08-11-2014, 01:33 AM
