Re: Are there any advantages to running synthetic oil
I just switched to pennzoil xrt semi syn. Just put different plugs in plus the oil made a huge difference! No more carbon and soot build up. My plugs are hotter autolites range 9. I would steer clear of full syn I had problems with fuel pump check valves turing over, dumping oil in pump and less fuel. I would not chance it unless you premix. Why my check valve turned over is mistery maybe bad fuel or the oil. Worst oil is very inexpensive stuff, sure it works but ive seen how much better my plugs look now.