Nesikep":2pa6ncl5 said:I use Lucas synthetic in my truck and change at 5K miles, sometimes up to 7... I do one oil change a year, don't drive a whole lot.. top it up when needed.
Rumor is that adding a quart to mobile 1 @5-6k miles recharges it so to say.
Bright Raven, there were some ford vehicles (can't remember which ones) that were VERY sensitive to the viscosity with the cam advance soleniods... too thick an oil and you'd get a check engine light because the cam wouldn't advance quickly enough
We had a Ford V10 at work and the mechanic used 15w40 synthetic, like the diesels, and burnt up the valve train because it wouldn't lift the oil to the top of the engine. I believe it was supposed to run 5w30Nesikep":2ieih0xr said:I use Lucas synthetic in my truck and change at 5K miles, sometimes up to 7... I do one oil change a year, don't drive a whole lot.. top it up when needed.
Bright Raven, there were some ford vehicles (can't remember which ones) that were VERY sensitive to the viscosity with the cam advance soleniods... too thick an oil and you'd get a check engine light because the cam wouldn't advance quickly enough
What's your owner manual say?Bright Raven":1k7uqieo said:Dealership where I just bought the 2014 F-250 said they highly recommend synthetic oil or a 50-50 blend.
Kingfisher":3mjja0pc said::|What's your owner manual say?Bright Raven":3mjja0pc said:Dealership where I just bought the 2014 F-250 said they highly recommend synthetic oil or a 50-50 blend.
I believe y'all killed a V10 but not cuz of the oil viscosity...SteppedInIt":pol59c5h said:We had a Ford V10 at work and the mechanic used 15w40 synthetic, like the diesels, and burnt up the valve train because it wouldn't lift the oil to the top of the engine. I believe it was supposed to run 5w30Nesikep":pol59c5h said:I use Lucas synthetic in my truck and change at 5K miles, sometimes up to 7... I do one oil change a year, don't drive a whole lot.. top it up when needed.
Bright Raven, there were some ford vehicles (can't remember which ones) that were VERY sensitive to the viscosity with the cam advance soleniods... too thick an oil and you'd get a check engine light because the cam wouldn't advance quickly enough