Quote Originally Posted by Fubisin View Post
Now that I have ruled out putting those "fart cannons" on my grand prix I have some money to burn, I like to spend money.
What is everyones thought on synthetic engine oil compared to a basic 5W30 oil change. Is it worth the extra cost?
I've run 5000 miles on my engine oil.Primarily Castrol 5w30 and a standard ac filter.Gm rates oil change intrevals at 7500.Filter design is the real culprit for efficiency in getting rid of particals and screening oil.I've run mineral oil and only ran blended for a short while.I had a nissan maxima wagon built in 1988.I sold it 3 years ago.When I sold it I had driven 292,000 miles.The girl that bought it then is still driving it.I used castrol
10w30 mineral oil then and nissan oil filters.Changed every 4500-5000 miles.I fully recommend manufacturers oil filters do to extensive testing and warrenty.I know a mechanic who has run his grand prix 3800 engine to 300,000 miles with mineral oil.I think synthetic is best for north america cold weather start ups or dessert heat.Also my driving on these cars are not puttering along at all.I get up and go.I run intersates at 75-80.