I have a few vehicles that I don't put many miles on. Mostly driven during the summer time. I have been typically changing oil after 4-5k miles or every 18 months. Now I drive them even less frequently and was wondering if I am wasting my time changing oil after 2k miles if they don't get driven much. Can I stretch the oil changes in time past 18 months? Is there scientifically proven data to support that oil has to be changed so often because it starts to degrade even if the car is not being driven? When the vehicles are driven they get a chance to fully warm up and they are not being abused (driven like a gramma).
PS: I change oil myself and the cost of oil/oil filter is not a factor here. When I change oil I typically do it on at least 2 cars at the same time regardless of mileage I have put on them.
PS: I change oil myself and the cost of oil/oil filter is not a factor here. When I change oil I typically do it on at least 2 cars at the same time regardless of mileage I have put on them.