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No
Cadillac recommends premium fuel in this engine.
No it is 4 cycle oil, 2 cycles is the only oil you mix with gas for 2 cycle engines. They may be referring to a syn/ conventional oil mix that they have preformed to improve their oil. It will work fine in your 4 cycle engine as long as it is the correct weight for your engine. As long as it is like 10w30 you should be good to go.
If you mean a CR 125R you have to mix 2 cycle oil and premium gas
A four cycle engine does not use a gas/oil mixture. The oil is in the crankcase and the gas goes in the gas tank. If you put oil in the gas on a 4 cycle engine it will run poorly and smoke a lot.
You should use only premium in the 2009 rx350. If the manual says premium gas only, then you should stick with it to avoid any problems that may arise.
A gas only engine has a spout where oil is added to the engine. If there is no spout, then it is a gas/oil engine. FYI - gas only engine is a four-stroke (four-cycle) engine and the gas/oil engine is two-stroke (two-cycle).
Yes
if you have a turbo engine you need premium gas, look inside your gas tank door and it will tell you what octane your car requires.
No. Premium has a little less energy than regular. (Diesel has more) You use premium gasoline because it explodes a little faster, and will prevent the engine from knocking. Your owner's manual will explain what octane level of gas you should use.
The 3800 engines with the superchargers require premium gas. Higher octane fuel prevents engine from self ignition of oxygen and gas causing engine misfire.
Yes, this engine requires Premium fuel. Using Regular fuel will cause pinging and engine damage.