Generally, today's oils aren't near as bad as it used to be about switching around.
^^^Agreed. To me, the only advantage of buying semi-synthetic would be cost. I would just do one or the other. I know my '89 460 lists 10W-30 as recommended oil. Did things change in '91?
Agreed, Ben. My personal experience goes with 3000 mile intervals for two reasons.
1) Most of our mileage is 4 miles or less, thus causing buildup of moisture.
2) We still use wagon trails for roads out here. I change the air filters every 6000 miles, because it needs it.
This is NOT for everyone, but it works for me.
My personal experience goes with 3000 mile intervals for two reasons.
1) Most of our mileage is 4 miles or less, thus causing buildup of moisture.
2) We still use wagon trails for roads out here. I change the air filters every 6000 miles, because it needs it.
This is NOT for everyone, but it works for me.
Got a 91 F250 with the 351W about 140000 miles on it. The previous owner used 5w-30 synthetic blend oil with Lucas additives. When I go to change the oil should I stick with that or just go full synthetic?
Thanks
idcwby