Fuel Economy

[marcus]

try opening your window and driving right beside a wall and accelerate..the wall will revert the noise back to you...on regular youll hear a kinna like knockin on the engine noise only during acceleration if you dont then ur car is fine.. still trying to find out if its due to the timing chain..but it does go away on 89 octane gas.. so mostlikely its either timing too advance or the antiknock sensor not working properly..

Originally Posted by swng

Your mpg numbers are improving every tank Marcus. I will be interested to know how does your car perform after switching back to regular gas as far as fuel economy is concerned. I have tried a tank of 91 Octane fuel (Chevron) and also noticed that the motor sounded a little quieter. That could just be due to psychological or other reasons though. I have just switched to Shell 87 and the car does not seem to have become more noisy.