Originally posted by Roger R:
I say run the Mobil 1 and leave it in for 6K or do what I do, run 5K change the fitler and add a quart and drive another 5K and then do a complete change. I was doing this before I talked to our resident Ford engineer Terry Haines and he told me thats what he does 
WOW!! I freak out when I pass 3500 miles w/the synthetic! This would mean that the price would be the same for the regular oil which would be changed every 3000 miles, and the synthetic, every 6000 miles.
Anyway, I never read the SVT manual calling for synthetic, and didn't care as I started using Mobil 1 anyhow.
Can someone give me a tip on the manual transaxle synthetics? Is anyone using synthex in their tranny? I want to do this, and need some advice on which one to use... Thanx!
