QUOTE(k!nex @ Oct 9 2013, 01:03 AM)
Salute u mang.. u really keep track of your fuel usage
Now after the fuel price increase, full tank after 1st fuel low warning is around RM105

... I wonder will our car save more petrol if pour lesser fuel each time for city driving since weight reduced. Have u tried before?? Our car tank 59L . So for fuel weight alone assuming full tank is 43.1kg . I dunno whether does it make a difference...
Are you using syntium 800 for engine oil ? I get abit better FC at 12.9km/L after driving 200km from KL to Ipoh constantly 110~120km/h. This manual really high RPM ... 110km/h at 3k ngam ngam
Really that good FC if drive at 80km/h ?? I will try as well...15km/L is damm good..
U really can adapt to this clutch after 3 days?? I really salute u. I have been driving mine for 3 weeks...No engine stalled but i still cant get the point where u everytime release clutch and press accelerator without a slight jerk. Most of the time either release too fast causing jerk or release too slow causing the waaaang engine sound before closing the clutch. But i do agree the Inspira clutch behaves very different from an Iswara....The clutch pedal pressure feels the same from top to bottom out.
1.) I think not worth the trouble to top up less in the tank. My reasoning is like this:
If you top up only half tank every time, you save carrying around 21 kg for half the time, so can average the savings out to be the same as removing 10 kg from your car all the time.
The Inspira's dry weight is 1300 kg (probably 1400 kg after filled up with all the required fluids and driver). 10 kg weight saving is 0.7% weight saving. This will reduce the energy used to accelerate the car by 0.7% (however, energy required to overcome aerodynamic drag will remain the same).
For a REALLY bad case where the driver is always caught in start-stop traffic (where much of the energy is spent accelerating the car and idling the engine), I simply assume that 1/3 of the engine's fuel consumption is for accelerating, and the other 2/3 is for idling, air cond, alternator, power steering pump, the energy saving will be about 0.24% due to reduction in weight.*
For a fuel consumption of 0.1L/km (10 km/L), an improvement of 0.24% means that the consumption is now 0.09976 L/km (10.024 km/L). For your tank of 30 L, this translates to an additional range of 0.024 km/L* 21L = 0.72 km = 720 m.
I guess most people will need to make a 700 m detour just to pump petrol (unless your regular station is very near your normal route). Not to mention the costs in terms of time, additional fuel used (need to start/stop the engine one more time).
* honestly, I suspect that the ratio will be even worse than 1/3 and 2/3 but it will take too much work to get an estimate.
Even washing your car one time less (0.5 hour if you do it yourself, or RM 10 if you pay someone to do it) will save you more money/ resources.
Man, that was an unnecessarily long analysis...
2.) To be honest, I don't know what oil I'm using. Never considered it. I just ask my SC to upgrade to fully synthetic. I think it's a Shell product. I should find out more...
3.) FC at 80km/h can reach 15 km/L if it's smooth and 80 with very little change in speed. Either it's a clear road and you're very disciplined (haha!) or the traffic is all moving smoothly in unity like water in a hose.
4.) On the clutch, I think i didn't stall it after 3 days, but the shifts took a few more days to get OK. I stalled the car twice after collecting it and travelling in start-stop kind of jam in KL. I think I learned where to hold the clutch (in terms of knowing how deep my foot need to press the pedal) for it to bite- that helped smooth out the shifts. I think I do it easier because my left foot is quite sensitive- I use left foot for the brake when I'm driving an automatic car. This is my party trick - when i drive any auto car, I automatically drive with right foot on the throttle and left foot on the brake. However, I don't dare practice it in a manual car like the rally drivers (using right for brake and throttle, and left for clutch and brake)- I have confused between clutch and brake before, and it's f***ing risky to make that mistake on public roads.