Intermittent tailpipe smoking
#16
02-17-2018, 04:32 AM
Changing the PCV valve would not hurt. I'd also try running a High Mileage 5w-30 oil in it for a couple oil changes. The extra viscosity when hot isn't going to do anything but help and the high mileage oil has seal conditioners in it which may help to reduce some of the leakage if it is the valve guide seals.
I don’t like heavier oil because i enjoy the .2mpg increase. (Totally kidding)
maybr I’ll give it a try.
#17
02-18-2018, 05:45 PM
#18
02-19-2018, 04:42 AM
I saw you got another PCV valve. All I have been running in modulars (4.6l-6.8l) for over a decade now is either 5w-30 or 0w30. If you live where it gets close to or below zero a lot, the 0w30 makes a difference. All the of those engines are not as "seasoned" as yours either.
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