Techron Fuel Additive.

[gtc]

I use the Lubro Moly valve cleaner and injector cleaner, on the recommendation of Steve Weiner. As a bonus, the two cans together are cheaper than one can of the good techron.

I question the idea that any fuel treatment should be done before an oil change... I don't follow this rule, and my oil analyses have never shown any abnormal contaminant or viscosity results.

[GMR911]

When I first bought my 3 l motor it was running poorly, stumbling badly between 2500-3500 rpm. Ran 2 treatments back to back of techron and I run a treatment before every oil change for the last 10 years. Has run great ever since. Jerry

[dshepp806]

Used Techron for a long time,..now a disciple of BG products.....especially since I've access to it for free.

Doyle

[simsalabim]

I am on my first tank of techron treatment now after discovering my motor had been running excessively rich for some time and producing large amounts of carbon in the usual places. I was not planning on an oil change and had not heard of that suggestion until this thread. Is there any empirical data at all that backs up this contention ? Has it been a suggestion from any manufacturer of similar products ?

Bill

[86 911 Targa]

Thanks to all for the feedback.

Here are the comments from a tel con with a Chevron tech.

1. When the tank is 1/4 full, add 1oz of Techron per gallon.

2. Drive the car.

3. Refill the tank to 1/4.

4. Repeat step #2.

5. Check the plugs for deposits.

The product should remove carbon deposits from the combustion chamber.

Repeat once as needed.

Gerry

[GMR911]

I fiil the tank and add 20 oz of techron, run it down to less then a 1/4 of tank of gas and about 5 gallons of gas, run it down to almost empty, fill it up and change the oil.

[bourgeois911]

Just bought a case of 6/16 oz bottles at Costco this morning for $12.99.

[dsmyth]

If it works anything like the BG 44k it does most of its cleaning during the heat soak cycle when the engine is turned off. The more natural stops and starts you can do while it's in there the more melting of the deposits will take place. Just doing a straight highway drive with 44k in your tank will accomplish little. Some cleaners actually remove deposits to agressively and can actually block small orifices. Its a fine line . It's important to have just the right chemistry to dissolve build-ups safely. Similar chemistry to clean internals of automatic transmissions, you don,t want clogged valve bodies that just make your shifting problems worse. Doug

[gtrp]

Just threw some in my motor and changed my fuel filter.
Car was suffering from poor cold idle and stuttering at 2000-3000rpms.
When I started my car and let it idle, it shot out a ton of black mucas like it just sneezed.
Now it idles like a dream. Wow. I'm not sure previous owner did any maintenance on the car.

Now I need to go clean my garage walls.


81' 911sc - Weekend Project Car
09 GTR - Race Car

[timmy2]

Just read a Porsche NA technical bulletin recommending Techron full strength in a full tank of gas, run it to 1/2 tank and then top it off as a way to clean out the system.
I'll see if I can find it again and post it.

[gtrp]

Interesting thanks, that would be awesome to see.


81' 911sc - Weekend Project Car
09 GTR - Race Car

[BSNMOE]

I've been using Techron for over 25 yrs and never changed my oil after running it thru a full tank of gas 2x per yr. There is no warning on the bottle. Is there any validity to this?
Back in the 70's with Mech Fuel Inj allot of gurus said to use Marvel Mystery Oil in both gas and oil.

[dsmyth]

There is no need to change your oil after a fuel treatment. If there is you have other major problems to worry about first. Rings missing ect. Doug

[Quicksilver]

Originally Posted by BSNMOE

I've been using Techron for over 25 yrs and never changed my oil after running it thru a full tank of gas 2x per yr. There is no warning on the bottle. Is there any validity to this?
Back in the 70's with Mech Fuel Inj allot of gurus said to use Marvel Mystery Oil in both gas and oil.

The quantity of Techron in Chevron's gasoline is quite a bit less then if you add Techron as a fuel treatment. If you have been using Chevron consistently you won't have had a opportunity to build up any deposits. Doing a 'mega treatment' by adding a bottle of Techron serves no purpose. If you have a car that someone has been running the cheapest gas they can find then you might very much need to treat the fuel system.

As far as changing the oil...
If you have a badly varnished engine (perhaps it was left sitting for a couple years) when you do a serious fuel treatment the deposits that get knocked loose are going to go somewhere. Almost all of it will go out the exhaust but some of it will go past the rings with the combustion gasses. If an engine is in that kind of shape you should think of giving the oil a Seafoam treatment anyway. Then of course you will need to change the oil anyway.
To add to that, if an engine has set around to "gunk up" the rings are going to be sticky and have extra blow-by for a while. (Remember that engines ALWAYS have some blow-by. If they don't have blow-by the rings won't correctly seal and you will blow oil like a fogger.)

[GMR911]

That same Porsche tech bulletin I believe states to change the oil within 500 miles of treatment with techron. I haven't read it in a few years but pretty sure said to change the oil.

[timmy2]

Here is the bulletin, no mention of an oil change, but it does say to repeat the treatment twice more.

[dsmyth]

Notice the date is 1985 before ethanol. Thats a whole new problem,worse and requires a different chemistry to clean and protect.

[sand_man]

Originally Posted by gtc

I use the Lubro Moly valve cleaner and injector cleaner, on the recommendation of Steve Weiner...

^^^This! That's what I use in my 993 semi-annually. Both products at the same time, right in the gas tank.

[Lapkritis]

Just put a Bosch efi car back on the road. Had been driven maybe 20 miles in a calendar year and parked without stabilizer. Fresh tank of premium and manual bottle of techron has solved an intermittent cyl 4 misfire. Recommended for cleaning... I've also used the Lucas injector cleaning product in the past with success.

[Hydrocket]

Techron is OK. But if you want the best it's BG44K, hands down.

I also prefer Amsoil PI additive over Techron.