Fuel Economy - What do you get out of a tank? (3rd gens only)

[epitrochoid]

Thought i would give an update on my wifes tj11 exec.

I have used a can of subaru upper cylinder cleaner through the engine. there was bugger all white smoke which means the engine has very little carbon deposits. This made no difference to fuel economy though.

This subaru cleaner is a really good product. I have used it in my 93 v6 triton and it surprisingly cleaned a lot of carbon out (white smoke from exhaust) and stopped my annoying lifter tick on cold start.

I have also changed the engine oil (the old stuff had done 7000kms unknown viscosity) to a castrol 5w-30 fully synthetic (slx3). this has lowered the average from about 11.5 to 11.1 litres per 100kms. these figures are from the trip computer.

I also did the 02 sensor, only to find it had been replaced before so of course this change made no difference.

I would also like to change the rear muffler but i need to convince the wife a bit more

Regards

Epitrochoid

[JarRah]

With a stuffed catalytic converter my fuel econ has gone to hell... need my tax back soon.

[JarRah]

With a stuffed catalytic converter my fuel econ has gone to hell... need my tax back soon.

Apparently cat is fine... lookin into spark plugs and leads. I used to get awesome kms on the VRX now its down to 450km to a tank.