My 21 TT has not had the engine rebuilt that I know of. It has always been a little smokey but after changing the oil tonight, it is a LOT smokey.
I had 10W-30 in it and used STP 10W-30 for the oil change. Any ideas or thoughts?
Should I be using "NON-detergernt" oil.
Non-detergent or detergent oil will not change the smoke. New rings and a valve job might! Might try 10-40. Could be adding the STP (might be too slippery for your bands and clutch anyway) is leading (just guessing) to the extra smoke.
Tom, like you I like the benefit of multi grade oils. But for an engine design that has lasted one hundred years plus, I tend to stick to what it likes.
Thanks Mark and Tyrone.
oops, I wonder if the liter side of your multi oil is not being wiped off the cylinder walls. Ring wear is not tight enough due to age/wear. Or the walls have scratches filling with oil, letting the oil to by pass rings.
What makes it worse for a model T if still all original, is that they have no oil rings, detergent oil would be like having a dose of salts!!
Tom, I assume from your post you added STP oil treatment TO you current oil? If that's correct, you oil might be so thick the oil rings can't scrape it off. Don't know if this is totally relevant or not, but I had a generator that I thought would run better on 10W-40 (detergent) oil than the 5W-30 (detergent)oil it was normally running when I bought it. Bad move! That generator smoked and used oil like crazy. Switched back to 5W-30 and all is well.
NO NO It was STP brand oil. Nothing extra added but they advertise cleaning agents or something in the oil. I bought it because it was on sale not reading the label first.
A dose of salts is good for us once in a while. Could I just smoke out the crud or NO not really.
Just go back to the stuff you were using. Never argue with what works.
What Kevin said above. If you really noticed a difference in the smoking the only new factor is obviously the oil. Wether it's the additives or it thins out more I don't know but go back to what you were using previously and check again.
I suspect it is overfilled. Open the top petcock. Let it run out until it stops. Close the petcock. Drive the truck.
I was thinking the same thing that Royce said.
Once I over filled the oil in my T.
I was in a hurry and didn't give the oil enough time to flow back to the transmission.
It smoked a lot and ran poorly.