velo

For those using techron, how often should this be added to the fuel for routine preventitive maintenance? I have 19k on my '96 cab, no cel, etc.

Also, I have noticed that my lifters seem a little noisy. Any recommendations regarding Swepco 502 oil additive?

Thanks

Ray Calvo

1-2 times a year for Techron addition should be fine. Haven't used the Swepco juice.

dhicks

Every time just prior to an oil change was what I was told.

InTheAir

I'm currently running one through my tank. This is the first time one has gone through this car (26k miles). I will probably add another one to the next tank before my end of season oil change and subsequent hibernation.

Chaos

Quarterly

amfp

I switch off between 20 oz bottle of Techron, and can of BK-44 about 500 miles before each oil change.

prez!

I am pretty sure it states on the bottle every 3000 miles

Rob 97 993c2

do Turbo's need a techron fill up as well given they dont seem to have SAI issues?
Im getting an oil change in 10 days, should i run a can thru now?

Terry Adams

Yes, yes, and run the engine vigorously until the tank is empty. By then any loosened contaminants will be in the oil, which will get changed. I do this before every oil change.

Flying Finn

Before oil change, add techron, run the tank empty, fill up again and then change the oil.

JasonAndreas

Techron will do nothing for the SAI problem because of the location of the SAI ports. Having said that, I used Techron religiously before every 3-5k mile oil change for the past few years and after puling my motor last summer I've come to the conclusion it does nothing for the rest of the engine either. The heads and valves had the usual amount of carbon from 130k miles. The only "clean" portion was on the backside of the intake valves directly in line with the spray from the fuel injectors. There might be a benefit to the injectors but considering how little it now costs ($12USD) to have them cleaned ultrasonically and to have the filter basket replaced its not really worth buying Techron.

Terry Adams

Same here at the 120K rebuild on this, and on my previous '87 at 116K.

Worn valve guides on most Porsche engines past 100K will do a carbon number on the combustion and exhaust areas, so Techron can't solve that problem. But I can see Techron working before the guides wore down, whether or not they contributed to the clogged SAI ports, and in that first 30 secs or so on cold start up when the SAI ports are open. Assuming the one way SAI check valve is ok. It only hurts in the wallet, but it is cheap insurance in case there is any benefit.

dhicks

Jason, interesting post....there have been a number of posts on this subject but I think (?) this is the first I have seen with +ve evidence of no benefit for techron use????

JasonAndreas

David,
I haven't seen too many posts from people that have pulled their engines to take a look AND used techron regularly, Terry might be the only other one? (hopefully others will post? CWalrod?) Had I not pulled the motor and seen it with my own eyes I'd still be using the stuff. Certain experts here on Rennlist have claimed that it works on engines they've taken apart but I've since learned those people don't actually work on Porsches (they just pretend to help sell stuff).

pcar964

Very interesting post, I used to wholeheartedly believe I was cleaning the valves with every techron tank (once every few thousand miles). But if you pull the thing apart and there are still deposits, maybe it's a waste of money.

Another thought here, the techron bottle says "treats up to 12 gallons," and our tanks are over 18 gallons if I'm not mistaken... would using a bottle with a FULL tank in our cars possibly dilute the techron sufficiently to render it useless? Is there any benefit to increasing the ratio, i.e. one bottle with only 8 gallons, etc?