transmaster

It is good that I didn't go to 5W-20 weight. I found the engine has a weepy rear main seal not bad so I don't have to address it right now, and it is not really a big surprise in an engine with 154,000 on it.

NGM

I run 10-30 with no problems. I ran the 5-20 and it did not make a diffrence. I think the idea was the engine has to work less to pump it so its less emissions. The fuel mileage stayed the same either way so I opted for the slightly heavier.