Which Oil to Use?
#1
#2
Ive heard you shouldnt but i see people doing it. I just switch to synthetic after i did my heads. I say go for it. motorcraft filter and some 5w30 (depending on your season).
also dont use valvoline unless you want to stay committed to it, it coats the valve train for protection and i guess if you switch around alot it can add gunk and grime. dont quote me on that though
also dont use valvoline unless you want to stay committed to it, it coats the valve train for protection and i guess if you switch around alot it can add gunk and grime. dont quote me on that though
#8
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#12
#13
I used m1 5-20 since new, as the milage racked up tried motorcraft a few times, i now use rp 10-30 with the wix filter. The engine does sound quieter, as for better fuel milageits hard to say but ive always averaged 19-21 mostly highway, i have to change the heads since my symptoms r the same as bad valve seats. I will say i have always ran93 octane, tried 87 power and milage dropped, but my engine did not ping.
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kmcrane
4.0L OHV & SOHC V6 Tech
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02-14-2011 01:36 PM