I know there is a lot of talk about sta-bil and sea foam, but has anyone used Lucas gas treatment in their vehicles or gen sets. talked to my DW's cousin and he said he got quite an increase in gas mileage by using it in his SUV driving to AZ this year.

I've used it in old gas for mower etc. Seems to work well. Doubt you'll see mpg increase.

I usee it every fillup in our Kia van and in the MH. As for MPG increase I see .5 in the MH and maybe 1 in the van. However, they both run so much better on this rotten ethenol gasoline that the extra cost makes it worth while for me. I use Marine Sta-bil in the MH, I put it in before I park it so it has time to mix in the fuel tank and get to the carb.

It could be the added detergents in the Lucas fuel treatment. Over the last few years the EPA as reduced the required amount of detergents in gasoline by 50%. I noticed last year one of our cars was not getting the MPG it did previously. It also didn't idle as smoothly. After adding a bottle of fuel injector cleaner and running that tank of gas through, the average MPG started climbing up. The idle also smoothed out. Now I it's hard to tell if the engine is even running.There are 'Top Tier' fuels that have at least double the EPA required amount of detergent. If you use gasbuddy to check fuel prices you see the stations that are rated 'Top Tier'. Mobile, BP, Costco and Shell are some Top Tier fuels.I don't know if it's necessary to add detergent to each tank but depending on the type of fuel you use it wouldn't hurt to through some in every now and then.

Let's not forget yet another additive as in Techron I use the full synthetic stuff in many of our engines including my outboardsUnderstand it is similar to what Yamaha sells as "Ring Free"

I believe there is an added benefit to the use of this product albeit, sometimes difficult to measure with so many variables involved. I will have to say, this past summer I did experience the highest mpg average that I've ever gotten on my truck using this fuel additive. I was unloaded, driving 55-60 & averaged 19. Normally & without the additive that would have been closer to 16-17 at best. I purchased one 5.25oz bottle & 32oz. bottle. After using the smaller bottle the first time, I simply refill it from the larger one as needed. 100% of the time at home & around town I fuel at Chevron stations with Techron + the Lucas. On trips, I normally fuel at any convenient truck stop, so I use the Lucas then.I also use it in my generator & ATV.I have never seen reviews as good as these on any similar type product.HERE

gas additives | Good Sam Community

MEXICOWANDERER
Explorer
Jan 17, 2015
Horse pucky!

Urea based fuel additives remove carbon and Techron contains more than Lucas

All top tier gasolines contain urea. Shell's Nitrogen additive is urea. Chevron adds one oz per 16 gallons at the refinery.

Some engines do not benefit by urea gasoline. Others demand it or occasional use of a urea additive.
Oldme
Explorer
Jan 17, 2015
Interesting reading here:
http://www.fuel-testers.com/review_gas_treatment_products.html
jplante4
Explorer II
Jan 17, 2015
Oldme wrote:
Interesting reading here:
http://www.fuel-testers.com/review_gas_treatment_products.html

Clickable
KJINTF
Explorer
Jan 17, 2015
We have two or three of their alcohol fuel testers around here
Nice tools.......
MEXICOWANDERER
Explorer
Jan 17, 2015
For disassembled carburetion parts and dissolving of gum which looks like shellac, it is tough to beat LACQUER THINNER.
wa8yxm
Explorer III
Jan 17, 2015
As others have said, if the engine is gunked, injectors dirty, then there are assorted additives that MIGHT help.. on the other hand some of them may make it worse as well.

Sta-Bil and Seafoam are good for when the rig is not going anyplace soon (like winter storage) and I do use it if I do not plan to buy gas for oh say six months.

Used it last winter for one tank full (Filled up around October, added Sea Foam (2 cans) did not buy gas again till something like March or April (forget which) Did drive the motor home a number of 20 mile trips in that time, Up and down hills (SC Foothill conntry) So the engine got a good workout.

And again when I blew the engine (One can, half a tank) here in GA.. Since I'm now using only about a gallon a month (Generator exercise) till I got the 10 grand saved up (I am at 4 Grand as of this afternoon).
2oldman
Explorer II
Jan 17, 2015
old guy wrote:
I talked to my DW's cousin and he said he got quite an increase in gas mileage by using it in his SUV driving to AZ this year.
yeah, sure. I believe that.
Denny___Jami
Explorer
Jan 18, 2015
My solution to removing carbon buildup is to hookup to the trailer and go have fun with it instead of spending money on additives that may or may not work. A good hard long pull will do wonders to a sound motor that just needs a little carbon removed.

Denny
JaxDad
Explorer III
Jan 18, 2015
jfkmk wrote:
Unless your fuel system is gunked up you won't see an increase in mpg from any of these additives.

If you purchase top tier fuels, you'll never have to use an additive. Does anyone really believe that adding a few ounces of snake oil to 20 or so gallons of fuel will miraculously give them a significant increase in gas mileage?

I don't believe your first statement is quite correct there friend. It's actually pretty common to have dirty O2 sensors these days.

If the O2 sensors are dirty they're giving inaccurate readings to the ECM which will then erroneously adjust the mixture into a too rich condition.

It not be out of the ordinary to pick up 10% in fuel mileage once the ECM is getting accurate readings.

Additives like SeaFoam will clean those sensors where the stock additives won't.
jfkmk
Explorer
Jan 18, 2015
JaxDad wrote:
jfkmk wrote:
Unless your fuel system is gunked up you won't see an increase in mpg from any of these additives.

If you purchase top tier fuels, you'll never have to use an additive. Does anyone really believe that adding a few ounces of snake oil to 20 or so gallons of fuel will miraculously give them a significant increase in gas mileage?

I don't believe your first statement is quite correct there friend. It's actually pretty common to have dirty O2 sensors these days.

If the O2 sensors are dirty they're giving inaccurate readings to the ECM which will then erroneously adjust the mixture into a too rich condition.

It not be out of the ordinary to pick up 10% in fuel mileage once the ECM is getting accurate readings.

Additives like SeaFoam will clean those sensors where the stock additives won't.

The OBD II will typically throw a code and illuminate the CEL if the O2 sensor is reading outside of a normal range, such as if the sensor is dirty.

I'm not sure how Seafoam and others are going to clean a sensor located downstream of combustion.

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