That's awesome.

Just keep in mind there is a point of diminishing return. If you see an improvement, it's most likely because the injectors weren't performing optimally. Those who see little to no improvements probably already have nice flowing injectors Either way, it's nice to do some cleaning once in a while.

 

I've used Lucas twice consecutively and honestly I have not noticed any difference in city or highway MPG.

 

^^yeah i used 3oz on a halftank just to clean it out. then i went a full tank and put in about 9oz. i think i lost some mpg. i used to get 280miles a tank. looks like ima need a fill moro at 250miles. is this possible? did it loosen the gunk and clog something else?

 

wonder what it would do for me....i just got 352.6 miles driving 50% city and 50% interstate all with a/c on

 

I used twice on my car and I didn't see anything different. I even unplug my battery and it's still the same. I average about 21-23 mpg mostly highway on my gs430

 

I just drove from Minneapolis to St. Louis and back, and that is about on par with what I was getting on the highway. It was about 80% highway, 20% city, and I got 350+/- when my light turned on, but that's with 4 gallons left for the reserve, and averaging 80-85mph with the AC on the entire way.

I haven't use it at all, but on my trip from Mpls to Stl, we averaged about 80-85 mph which isn't great for gas, but I hate long trips. But every time we filled up I was getting between 22-23 mpg, best I've gotten was 24, and worst was 18. All in all, I would say all there of us have similar mpgs readings.

 

I threw some STP fuel injector cleaner in a full tank of premium a few weeks ago. I went from 17mpg to 19mpg. I mainly do around town driving (45-55mph though), though I have just started using Shell premium even though my dad thinks it is a waste of money. Car is in the shop right now getting a severe brake failure fixed, but once I change the oil I'll throw the other bottle of STP in (it was 2 for 1).

This mileage seem typical for a '00 GS300 with 134k miles?

 

yeah but i drove like 60 miles with the gas light on though....i know (after testing there is ALMOST 80 miles left after my light comes on) i want more mileage

 

anybody wanna show me which vacuum line they used for a 1UZ for seafoam?

 

I've always sucked seafoam through the PCV.

 

lucas makes some good stuff. you can trust em.

 

Are these the ones you guys are all talking about:
5.25 fl oz bottle


32 fl oz bottle


Is the 32 fl oz bottle better since it says "fuel conditioners" on it and the small bottle doesn't have that?

Thanks in advance for your time and help.

 

That's the one. If you're gonna use it often, find the gallon size for $28 and purchase that. You get more for your money.

 

I tried this about several months ago when I cleaned my MAF & throttle body. It's kind of hard to tell if it was any good since I cleaned the MAF at the same time. I will try it again when I change my oil soon.

 

Any reason why the bigger 32fl oz bottle says "fuel conditioners" and the small bottle doesn't? Aren't they supposed to be the same?