Originally Posted By: Istvan_Buda
I did put Castrol Edge in and will run it for 5000 miles and send it to see how my iron wears then i'll switch to Valvoline Full sync and run that close to 10k miles and see how that performs
I'm confused why you would run Edge 5k and synpower 10k. You should just pick a nice round 7,500 for all synthetics. Edge is top of the line for extended drains if you buy over the counter, and synpower while a very good oil for wear, is not made for extended drains with its sodium based additive package.
If anything i would run the Synpower 5k, and the Edge 7.5-10k. Your edge will probably handle 10k miles well, but your not going to get much better on the iron wear at those kind of miles with the universal averages being 17 ppm iron per 5k run.