About 3 months ago I had my mechanic swap out the coolat on my 2001 BMW 325i to Evans NPG+. I believe the car still had the original BMW OEM coolant. When they did the swap I am not sure if they got all of the old coolant out before they put the new stuff in. I have looked into coolant analysis, but I dont have anybody local that will do it and even if I send off to get one the test is pretty expensive. My question is: Should I stick with the NPG+ or switch back to the OEM? If I switch back, what would be the best procedure to make sure that I got all of the NPG+ out of the system?
Thanks in Adavance
Thanks in Adavance