Thanks B JollyA good 20/50 oil (Castrol, Penzol etc) would be the correct oil for your engine. ALWAYS buy high quality oil---it is the life-blood of your engine, and no matter how much you spend on the oil, it will be a lot less expensive than s "goosed" engineI just purchased a 1966 Fiat with a 650cc engine and was told by the seller to never use synthetic oil! I have used Amsoil synthetic oil for years in everything from cars to lawn mowers, even my 1977 Vespa P200 Has anyone had any experience with this? Sorry if this has been addressed before but I’m a newbie
Whilst the viscosity is important, and as above, 20W-50 is good in most climates, modern oils are unlikely to contain sufficiently high levels of ZDDP (zinc and phosphorus additives). If you dig deep it can get very complicated, but there can be big differences, even if you choose a conventional oil labelled as suitable for classic cars. I use a high grade, four-stroke, 15W-50, motorcycle engine oil, which also happens to be synthetic.I just purchased a 1966 Fiat with a 650cc engine and was told by the seller to never use synthetic oil! I have used Amsoil synthetic oil for years in everything from cars to lawn mowers, even my 1977 Vespa P200 Has anyone had any experience with this? Sorry if this has been addressed before but I’m a newbie
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