Hmm.. dude, RM50 for 250km is normal lah. Mine is the Wira Aeroback Special edition, downgraded to 15" rims, a heavy sub woofer at the back and not a heavy right footer. My mileage is RM61 for 370km with the new fuel prices. Slightly better than yours, 16 cents/km.
But my car is 2 years old only. Here's what I've done or is doing in the last 2 years that might help my mileage :
1. Done a complete engine flush. Engine gunk was black as hell and had to go through 5 flushes to get clear engine oil.
2. Using 5W40 Fully synth oil
3. 15" lightweight rims (original 16" JRD elephant legs) with 195/50 low profile tyres
4. Usually don't drive faster than 90km/h
5. ABV9750 gave good advice. Follow it.
6. Keep engine as stock as possible. Service it according to service manual.
7. Always change spark plugs to stock ones, but make sure you change to the right temp type.
:shades_smile:
But my car is 2 years old only. Here's what I've done or is doing in the last 2 years that might help my mileage :
1. Done a complete engine flush. Engine gunk was black as hell and had to go through 5 flushes to get clear engine oil.
2. Using 5W40 Fully synth oil
3. 15" lightweight rims (original 16" JRD elephant legs) with 195/50 low profile tyres
4. Usually don't drive faster than 90km/h
5. ABV9750 gave good advice. Follow it.
6. Keep engine as stock as possible. Service it according to service manual.
7. Always change spark plugs to stock ones, but make sure you change to the right temp type.
:shades_smile: