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what do you guys suggest?Not many people like that oil....I'll let them chime in...
Cool, thanks for the info, 5w30 it is.I would just run 5w-30.
There has been a lot of discussion about this in the past, but it was pretty clear that the motor was designed to use 5w-30 but Ford ended up using 5w-20 to meet emissions requirements. Do a search on modfords or svtp and you will see what I mean.
I have been running Mobil 1 5w-30 for 45k hard miles now with no issues.
didn't slash have sludge in his motor from using RP?
i wonder how much RP donated to that test LOL.
Not sure but one thing I do know is that Mobil didn't contribute a dime. LOL
Redline is a little hard to find, advance used to carry it, Im gonna go with mobil 1, thanksgo with Mobil 1 OR Redline.. ive been running redline in my motor for about 7yrs and i almost never have mechanical issues..
I use Mobil 1 5-30 too, I usually pick it up at Sams, usually a little cheaper
Only Royal Purple race oils are fully synthetic which are for track only, straight grades. 5w30 is the oil you should be using even stock due to the heat output of these motors. I was at 520RWHP/ported eaton, I was using 10W30 Redline oil in the hot summer, and stored it during cold weather.
I would recommend a 5w30 oil, Redline or Amsoil. Mobil One has switched to dino base oils so they are not 100% synthetic anymore as of a couple years ago (to save money).