Well honestly I don't see what all the hype is about. I know some people who alternate and have had no problems. If you have any doubts you can replace with regular oil and just add 1 quart of an oil additive like lucas, slick 50, duralube for example to every oil change. That is what I do. Times are tough and money is tight for most everyone. And Synthetic Oil is expensive.
Hope this helped.
Sunday, March 1st, 2009 AT 11:41 AM