RE: 4 STROKE.... SAITO'S .... FUELS USED
I have a Camry Hybrid, and have been running synthetis from day 1, mostly because 0w20 is not available in a non-synthetic blend. I have been told the car also shipped from the factory with synthetic also, so not breaking it in with sysnthetic is silly. Heck, the Corvette has been using mobil 1 as the factory fill for the last 15+ years.
Once out of warranty, I plan to extend the oil change interval to 7500 or 10,000 with oil analysis.
I just got my first saito, and plan to buy the locally blended fuel sold for saito/ys engines. I think it is a synthetic/castor 20% oil blend.