Techron and Direct Injection

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I have always used Techron but now have a CTS with 3.6 DI engine and some folks have been telling me that with a DI engine I am wasting my money using Techron. Would appreciate any thoughts on the matter.
 
It may clear up some junk in the injector itself, but it wont be hitting the back of the intake valves to clean them. Youll need a manifold introduced solvent for that.
 
Originally Posted By: Audios
It may clear up some junk in the injector itself, but it wont be hitting the back of the intake valves to clean them. Youll need a manifold introduced solvent for that.


This.

Not worthless, but you won't clean the valves by using it.
 
Originally Posted By: DinoLover
By definition, doesn't the PEA find itself in the places where carbon builds up?


It is true that the atomized PEA residue will reach places that the gas stream does not but it is a little questionable as to how effective it is at cleaning.

I know at one point it was even stated that the exhaust after combustion would contain enough PEA residue to at least partially clean an O2 sensor and catalytic converter substrait.

Any fuel detergent engineers from Chevron care to comment on this?
 
Originally Posted By: JackB1
I have always used Techron but now have a CTS with 3.6 DI engine and some folks have been telling me that with a DI engine I am wasting my money using Techron. Would appreciate any thoughts on the matter.



I us it mine to keep the injectors and fuel lines clean.
 
Originally Posted By: JackB1
I have always used Techron but now have a CTS with 3.6 DI engine and some folks have been telling me that with a DI engine I am wasting my money using Techron. Would appreciate any thoughts on the matter.


It will keep the combustion chambers cleaner and keeps the fuel gauge sensor in the tank from fouling.

outside of the combustion chambers, ie the intake valve area... it's useless
 
So far I am not getting the feeling that my money is well spent using Techron in DI engines. I don't think I need to worry about the fuel gauge sensor in the tank fouling. The only question seems to be as to whether it helps keep the fuel injectors clean and ,again, some say that because they inject directly into the cylinders that will not be a problem although I admit that is hard to understand.
 
Originally Posted By: JackB1
So far I am not getting the feeling that my money is well spent using Techron in DI engines. I don't think I need to worry about the fuel gauge sensor in the tank fouling. The only question seems to be as to whether it helps keep the fuel injectors clean and ,again, some say that because they inject directly into the cylinders that will not be a problem although I admit that is hard to understand.


Yes, they keep the fuel injector nozzles clean of deposits (varnish & carbon)
 
There will be fuel system cleaning. From the pump to the injectors.
AFter that, deposits in the combustion chamber and valve heads will be reduced.
A bit of backwash may help with the backside of the intake valves.
This one is varied and vague.
 
This is where it would be more beneficial to use an intake cleaner method like the 3M kit that way you know the fluid will flow over the valves. I suppose you could introduce Techron in the same way as a mist, it would work this way.
 
I think my 2012 Hyundai Accent owners manual recommends a bottle of their Techron equivalent every 15,000 mi. if "top tier fuel is not available." I've been adding my own Techron to the gas when I fill up at a non Top Tier gas station. I've been adding 1 oz per 10 gallons of gas (with the old formula.) The newer more concentrated Techron would need a little less I guess.
But here's some valuable info:
The car has never seen anything but Top Tier gas or if I get a really good price on non top tier, I add a little Techron to cook up my own "top tier."
I've noticed the car will ping now that the summer heat is in full swing. It pings at low RPM when climbing steep hills in the hot weather. I'm assuming its because of combustion chamber deposits conspiring with the 11:1 compression ratio causing this. So, I guess the top tier and/or my "top tier" concoctions are not working to keep things clean! I run the 87 octane that the owner's manual says the car will run on just fine.
The car did not ping at all when it was new last summer under any conditions.
By the way, it is the "Gamma" engine. 1.6L with Direct Injection. It DOES NOT get the "exceptional" gas mileage like people have been led to believe (me included.) But you would expect it to since it has 11:1 compression, VVT, Variable length intake runners, direct injection, a 6 speed auto that runs low RPM at high speeds, and one of the lightest overall weights of any car on the road. To get the 40 mpg claimed highway rating you have to drive under absolutely ideal conditions.
Any comments appreciated.
 
j_mac:

If your car is "pinging" on every brand of regular gas something is wrong with the car, take it in and have the dealer check it. Sounds like a faulty knock sensor.
 
Sorry, brain [censored]. 7500 miles is the real owners manual #. I'm doing it before every oil change. I run premium in mine, so can't speak to the ping. Fuel mileage is less than EPA loop but I don't drive the epa loop, sooooo... It'll get great mileage if you hypermile or grandmother on flat level ground steady state hwy at 55 mph. Drive normal and you get normal mileage. Drive like a hooligan and you get ... well you get it...
 
Funny how a lot of the automakers are so against additives in fuel or oil, but are now recommending a product to add to fuel in DI engines. I wonder if they know something about DI many of us already know, and are hoping the additive will help.
confused.gif
 
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