Putting motor oil of 2 cycle engine into our gas tank? I don't know about that.

 

^^^ yeah that does make me kinda scared... i think ill just stick to 93 octane.

 

Would putting on a lighter set of wheels help? Or maybe also some Fuelmax tires? My sister's GS300 also has crappy fuel mileage (though not as bad as yours). She's got MRR GT1s on, and they're heavy...

 

Tires will make probably between 0-4% difference (getting 4% may mean large performance change). Rims can make a difference too, but probably 0-10%(some super heavy rims here). If you're going from OEM to lightweight, maybe 0-3%.
Notice how little this is, if you're thinking of spending money to save fuel, crunch the numbers to see how much you're going to be spending on fuel over a period of time (versus the other costs of your car).

Don't expect huge savings, more like instead of being able to go 300 miles, you now go 310miles on a tank, for example. Making sure you've taken care of everything else first is probably a better bet.

 

man am i glad i got the newer 430.... that thing gets 22-23mpgs and i'm already crying and complaining about it....350+ MPGs ftw!

 

It's not alot, I think 1oz per 5 gallons.

Read that thread. I was a non believer until I tried it in a car I don't car about....my winter beater, and sure as hell, my rough idle smoothed out and I went from about 29mpg to about 34mpg.

 

WHO chose 0-10 mpg!!!!!!!!!!

 

+1, I would not do it , unless I had it in writing from Lexus that my warranty would be honored

 

I rather use Techron or Lucas.

 

Damn that's a lot of gas the gs drinks up, i usually get 300 if i drive on the freeway, but city wise around 2 something...=/

 

me.... thread starter

 

i get about 270 till the light comes on,and then fill up asap at my local station

 

in the city thats how mine is. i got 286 before light came on, i reset mileage b and drove for another 3 days and 66 miles before i FINALLY decided to fill up at 352 miles....averaging 18 mpg in JUST city with ac on

10x better than last year and before i cleaned intake/throttle body

 

what city do u be driving in sakataj?

so u got from 286-352 while u on the low fuel light?

 

i don't trust the light,i've got 22 miles out of it i think,but i hate having the risk on running out on petrol,so fill up asap if it gets that low on journeys,in paris i kept it above 1/4 at all times due to not knowing where the next station would be