Hiiii guysss =]] im just trying to work this thing out on "Saving Money on Fuel" Considering its getting quite expensively just to drive a car. My car is a ZRE152R Corolla MY10 1.8L Currently what ive been undergoing with the test myself on saving money on fuel so far when its almost empty like as low as possible, leaving only 1 bar left on fuel (1 week & half) is 565km (Range)with filling to FULL Tank of fuel Cost me around close to $65-$70 on V-power Shell during (1.65 per/L) Today Shell V-power was (1.53 per/L) so when filled up, My fuel tank before filling was 3 bar & a half of Fuel. After a Full tank of fuel, my Range only stop at 555km (Range) <<< now that im abit confuse, isnt it suppose to be more Km since i have more fuel still? im reallll lost there but anyway, end up costing me $49.99 =] so was quite happy about that saving almost $20 dollars. but my concern is in the long run like annually? which way would save more money on fuel, getting it when its near Low Fuel or choose a day which is the cheapest which is usually around tuesday or wednesday for me. and just get it weekly? my previous run was always get it when its low, and ive got 565 km (Range) out of it so today was just a bit shock with only 555km (Range) and its same Fuel tank...not knowing whats going on... well let me know guys what you think???? p.s everytime i fuel up my car, tyre pressure is always check at 34psi on four wheels~ (apparently) that reduced 3% of fuel Consumption if you maintain it well LOL....so yeh thats what my friend told me... but yer cheers, Regards, Ceejay