so u guys means i should let it on D when going downhill rite? forgot to mention that my gbox is cvt gbox.. but when i going downhill by using D, it make my car more slow to go down n the rpm straightly go up.. i think that is wasting fuel... haizz

u want more better FC? maybe you should perform weight reduction. throw out unwanted seat,change bodypanels to carbon fibre. change to smaller alloy wheels,smaller tyres needs less torque to roll.

Wanna get more FC to be train urself stay at home for most of times... That is settle

2) Tyre Pressure.



My setup currently:
1) Shell Helix HX-7E 5w-30 SS  (next candidate: LM MOS 10w30 SS)
2) 36-37 psi (my car's recommended pressure is 33-35 psi.  pump over a bit because tyre is 'hot' when arrive at petrol station)
.

Over-inflated tyre is not something recommended.
An over inflated tyre can cause the tyre to crack, wear faster (at center) as well, which means more money wasted, as well as risk of blow out which can be very dangerous especially travelling at high speed at highway time.

Also over inflated tyre can have less grip which is risky, that can cause accident. An accident can cause more money, as well as risk of injury and life.
So don't be penny wise and pound foolish. 
Always use the optimum pressure recommended.

Tyre pressure generally stay quite constantly, if using everyday, it is unlikely to lose pressure from 31 psi to 21 psi, just a month or 2 using.

Safety is always the top priority.

The better way to save money is planning destination route properly, park you car whenever got parking space, don't go few round just to look for "nearer" car park.
Don't go to far for shopping just because there 2kg Milo pack is selling Rm2.00 cheaper. (I see many did this)
Light footer
Drive smoothly, instead accelerate fast, and break hard approaching junction/traffic light.

Many more effective way to save money, instead try to over-inflated tyre which can be dangerous. 

I'm aware that i shouldn't invest more money to push the FC that wouldn't save my initial invest cost.  a) i changed the engine oil to 5w-30 only when the service is due, not when my previous 10w-40 is still fresh.  b) i changed tyre to Ecopia EP150 because my previous tyre set already reach the tread wear indicator already.  in fact has been running on wear indicator for a few months already.  So in this way, i don't consider myself "spending more money".
4) this is one of thing i wanna ask, is it okay for normal car (aka car that don't comes with stop/start system) to do manual stop/start too?? i know this is fuel saving but some ppl said the engine starter will very fast rosak..  and maybe the battery strain is higher also because i'll be using air-con when the engine is stop.  Anyway i did this once because stuck in super traffic jam, didn't move for like 10 mins ++, off engine, off air-con, very hot
5)  malaysia is too hot, i cannot give up air-con.  but i do tune the temp knot to what i feel ok
6)  i don't have electric self-closing side mirror.. and not to mention its super dangerous to do so.  not feasible
Do you consider me over inflating already?? i dunno, because my theory is that, the car's recommended tyre pressure printed at the side of the door is "cold" pressure *Source-Wikihow*.  But for me, i drove a long way and when i reach a petrol station, my tyre is "hot", and so i should pump "hot pressure" aka pump a bit more than the cold pressure stated.

fuel additives, i dunno, but my eagerness to try out this particular brand is just too strong

Slight over inflation is ok. Some cars have two inflation schedule. It is safe to use the higher one.

Remember it is COLD pressure, that is pressure in the morning when your car hasn't move.

Blowout happen because of tyre failure. Tyre failure happens because of heat and heat is caused by *under* inflation. Under inflation causes the tyre to lose some rigidity leading to more deflection causing the tyre to heat up.

Wanna get more FC to be train urself stay at home for most of times... That is settle

Ha ha yesterday night, with my family wanna go for mamak shop for eatting roti canai only.
I am chose the far from my Tmn to 15km around there.
End up my wife sound me eat at our Taman is ok already, just took me less than 8km from my house to the shop, we also happy to enjoy the roti canai..

Save save save.. 20 cent & 20 cent increase like no tomorrow already.

Over-inflated tyre is not something recommended.
An over inflated tyre can cause the tyre to crack, wear faster (at center) as well, which means more money wasted, as well as risk of blow out which can be very dangerous especially travelling at high speed at highway time.

Also over inflated tyre can have less grip which is risky, that can cause accident. An accident can cause more money, as well as risk of injury and life.
So don't be penny wise and pound foolish. 
Always use the optimum pressure recommended.

Tyre pressure generally stay quite constantly, if using everyday, it is unlikely to lose pressure from 31 psi to 21 psi, just a month or 2 using.

Safety is always the top priority.

The better way to save money is planning destination route properly, park you car whenever got parking space, don't go few round just to look for "nearer" car park.
Don't go to far for shopping just because there 2kg Milo pack is selling Rm2.00 cheaper. (I see many did this)
Light footer
Drive smoothly, instead accelerate fast, and break hard approaching junction/traffic light.

Many more effective way to save money, instead try to over-inflated tyre which can be dangerous. 

Yes, slight over still ok, not the like significant over.

Cold vs hot can be insignificant for here, as temperature here difference is not the like from zero to 40C.

Stop/start more often make battery shorter, which a battery can cost Rm150~200, so whatever saving from fuel (by stop/start more often) may go to battery. Not to mention potential more wear and tear on engine part.

just pumped rm50 foor the new rm2.10 petrol. trying out bhp as suggested by some forummers for saga blm. the petrol feels so 'little', rm50 only get 23litres now.....woo woo, drive carefully and see how.

Staying at home will cause economy stagnation,  then recession, pay cut, job lost...lol..

Get a bicycle or walk to near by destination, save fuel, exercise & boost local economy...can burn those extra calories from roti canai & teh tarik ...lol...

Funny. I usually hear the recommendation to overinflate the tyres. Not to the extreme of course,

Cold vs hot here i don't mean the ambient temperature of malaysia.  i meant the temperature raised due to air friction within the tyre itself.  from what i observe is quite significant.  ie last time before i go out in the morning, i checked tyre pressure using my pressure gauge (cheapo type la ) is 31psi.  then after come home in evening/night or so, check again and the pressure is 33-34 psi.

kind of agree with you here.  i think the strain to battery and/or starter is too great.  not to mention no aircon during engine off! 

agree with you here.  keypoint is SLIGHT overinflate