fuel in a 1995 toyota camry xle v6? i hear you have to put premium unleaded in it. i hope not..
omg! ok it doesnt hurt your engine at all, 87 octane means lower combustion camber temperatures(less force acting on the piston; therefore higher octane mean more force on piston), the higher the octane higher pressures are needed for the fuel to ignite properly. I've never heard that higher octane gives you more power, i believe its non-sense. If you were turbo or super charged it'd be a different story, now you want the higher octane gasoline which needs higher pressures and temperature needed in order to ignite the fuel without detonation in the combustion camber. So in summary 87 wont hurt the engine, higher octane fuel will not hurt either but it will put a small amount more load since the crankshaft will need to push "harder" to get the higher temp exhaust gases quicker then it would in lower octane level
Hence it being more prone to detonation when subjected to high combustion chamber temperatures (from boost, nitrous, high compression, lean condition ect.) Higher octane is less prone to pre detonation and contains slightly less chemical energy than lower octane fuels, though it's a fairly small change.
quite the same, worded differently, currently taking fuel classes so i know what im taking about maybe it was just worded differentlyCreeps228 said:If you were turbo or super charged it'd be a different story, now you want the higher octane gasoline which needs higher pressures and temperature needed in order to ignite the fuel without detonation in the combustion camber
And the 1MZ suffers from pinging with 87 which the knock sensors detect, and the ECU very aggressively retards the timing, hence the power loss. In order to achieve the maximum rated power output, you must use 91 octane or higher. It doesn't give you more power, it just keeps you from losing power from timing retard and erratic ignition.Using higher octane gas doesn't give you more power, it just means it can be compressed more before self ignition, so if 87 doesn't cause knocking or pinging then theres no need to use higher octane fuel.