I got my Honda Prelude a few weeks back from a Ford dealer. They put in Motocraft 5W-20 that they use. Can add auto-rx to this for the first cycle or is it too thin?
I agree with Hammer the 5x20 oil is fine.When you finish the Auto-Rx cleaning and rinse are you going to add the Auto-Rx maintenance program good luck.
quote: Originally posted by vinu_neuro: I just realized something. The Motocraft oils are semisynthetic aren't they? It says that it takes longer to clean with synthetics. How much longer?
you can use synthetic -semi synthetics high mileage oil for clean phase of Auto-Rx or you can use non synthetic oil you have to run all of it 1500 miles. Auto-Rx does not care what kind of oil you use for cleaning. It takes no longer for any of these oils to clean.