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yes i use mobil 1 i think its good in as much as its oily!...how can one tell how good an oil is?...all i know is that every pro mechanic i have spoken to says its good
I use Mobile 1 fully synthetic 0W40 in my 172, it seems to warm up a bit quicker and sounded smoother. But I had the oil changed after 1200 miles and Ive still only done about 3800. So I dont know if it suits an older engine.