Posted 5/24/2009 07:52 (#721454 - in reply to #721178) Subject: Re: Synthetic oil in older engines
Run Mobil 1 in everything including the 3.5 hp lawn mower. Change oil every 10,000 miles or once a year. The only problem I had was in a 96 Buick (3800 engine 125,000 miles). I would get a low oil pressure light at idle with 0W-30, went back to 5W-30 and problem went away.
Synthetic oil in older engines
