Tune up in a bottle, whats your favorite?

[CourierDriver]

2 favs, maybe 3, B-12, Marvel mystery Oil and Seafoam, all have worked well. My latest usage on my Harley was seafoam and it stopped the engine from dieseling when I would shut the engine off,,,well see if it continues to not diesel...on going testing

 

[Kira]

No "tune up in a bottle " for me.
I wait until breakdown and use "mechanic in a can".

 

[joekingcorvette]

Techron works very good to keep finicky gas gauges working well and is my go to tune up in a can. Seafoam is a favorite as well. I give them both equal rights.

 

[Warlord]

Mechanic in coveralls beats tuneup in a bottle every time.

 

[tnt_motorsports]

2 favs, maybe 3, B-12, Marvel mystery Oil and Seafoam, all have worked well. My latest usage on my Harley was seafoam and it stopped the engine from dieseling when I would shut the engine off,,,well see if it continues to not diesel...on going testing

I have used B-12 when having OPE carb issues. It works very well IMO.

I use MMO pretty regularly in my OPE now days. It is probably unnecessary but I use it to help keep the fuel fresh when items are stored.

I have used Seafoam once in our now gone 2006 Chrysler T&C. I was burning oil and I used the Seafoam through the vacuum hose hack to clean the engine. This process worked great to clean the engine, but clogged the catalytic convertor. A pretty obvious side effect of the carbon clean out. It was a heck of a smoke show when it was cleaning though!

Just my $0.02

 

[Zee09]

Mechanic in coveralls beats tuneup in a bottle every time.

As long as you don't have a '23 CT5-V Blackwing

 

[RooflessVW]

B12 is my favorite.

 

[ecotourist]

I have used Seafoam once in our now gone 2006 Chrysler T&C. I was burning oil and I used the Seafoam through the vacuum hose hack to clean the engine. This process worked great to clean the engine, but clogged the catalytic convertor. A pretty obvious side effect of the carbon clean out. It was a heck of a smoke show when it was cleaning though!

When I was a kid I worked for a summer at a Pontiac Buick dealership. They sometimes put a GM product, Upper Chamber Conditioner (or a name close to that), through the carburetor of trade ins. You poured it in slowly for half a can then killed the engine by pouring in the last half quite fast. You let it sit for a half hour or so, then restarted. There was a lot of smoke - clouds of it in fact.

I suspect that was mostly the cleaner burning and it probably would have looked about the same on a new engine.

 

[hrv]

When I was a kid I worked for a summer at a Pontiac Buick dealership. They sometimes put a GM product, Upper Chamber Conditioner (or a name close to that), through the carburetor of trade ins. You poured it in slowly for half a can then killed the engine by pouring in the last half quite fast. You let it sit for a half hour or so, then restarted. There was a lot of smoke - clouds of it in fact.

I suspect that was mostly the cleaner burning and it probably would have looked about the same on a new engine.

I remember that MOPAR also had a product like that...Used some in my 1980 Chrysler Cordoba with a 318...

 

[Number_35]

When I was a kid I worked for a summer at a Pontiac Buick dealership. They sometimes put a GM product, Upper Chamber Conditioner (or a name close to that), through the carburetor of trade ins. You poured it in slowly for half a can then killed the engine by pouring in the last half quite fast. You let it sit for a half hour or so, then restarted. There was a lot of smoke - clouds of it in fact.

I suspect that was mostly the cleaner burning and it probably would have looked about the same on a new engine.

That reminds me of a product I used a couple of times back in the day - Carb-Out. And again, one wonders how much of the impressive smoke show is the product itself burning off.

As I think about it now, I wonder what the risk of hydrolocking the engine was?

 

[totegoat]

Top tier fuel is good enough for my engines.

 

[dogememe]

None, I haven't used any additives in a long time.

 

[Slick3914]

As long as you don't have a '23 CT5-V Blackwing

Is that what you call a humble bragg?

 

[Zee09]

Is that what you call a humble bragg?

No that's from the sad underfill thread on here the dealer did to the gents car.

 

[MSCH]

on occasion been known to add Power Service to the diesel and Gumout Total fuel system cleaner to the gas tanks.. I sort of think the stuff doesn't accomplish very much but using the stuff does make me feel warm and fuzzy

 

[hrv]

American Honey by Wild Turkey...Keeps my valves clean...

 

[AmBeRnEcTaR]

Royal Purple Max-Atomizer.
Half a tank of fuel
Send it down the 1/4 a half dozen hits.

Always seems to run quieter and less thirsty afterwards.

 

[Malo83]

Works in my Silverado, whole gallon in the tank.

 

[Owen Lucas]

Liqui Moly of course. They make a windshield washer additive too!

 

[hrv]

Liqui Moly of course. They make a windshield washer additive too!

yes the moly just keeps the wiper blades slippen and slidden on the windshield...