Originally posted by: KokomoGST
Originally posted by: kenleung
what's the point of changing your SYNTHETIC oil every 3-4k miles? it's a waste of money if you change it that often.
Just because you can go longer between changes doesn't mean you need to.
Besides, under severe duty (which is all non-highway) conditions, synth may help your protect your engine better. But the additive package will still break down at a good clip. It's a small price to pay for a smooth running high mileage engine, especially a turbo.