No HTwo O

Yes, and it's not evident in the UOA's.

No HTwo O

OK, what did the article say?

hacker-pschorr

It's really silly this has gone on this long.

Techron is a solvent, designed to get in all sorts of places to clean them up which means some will get into the oil.

If you don't want to run for a long period of time with a solvent mixed in with your oil follow the change advice, if not, don't.

This isn't rocket science.

Jadz928

I looked thru Excellence Sept 2010 last night. Couldn't find it.... though there was alot of stuff about 911's.

Jadz928

That is one of those things you hear midwesterners say often. Very endearing... somewhat local.

White Lightnin'

Pages 30; 32

Q: "In the May issue, you answered a question about Techron concentrate. Can you elaborate a little more on its effects on motor oil, how it is harmful, and what the degradation mechanism is?"

A: "In December 1985, Porsche put out Technical Bulletin #8510 [Landseer's post #45], which suggested the use of Techron to clean partially restricted fuel injectors. ...[blah, blah, blah]... After gasoline producers added detergent to their gasoline and the injector problem subsided, a friend who worked in customer service at Porsche AG in Germany sent me the note suggesting Techron could contaminate motor oil. While he did not elaborate on the degradation mechanism, he did strongly recommend changing the oil within 500-1,000 miles of the treatment." Bruce Anderson -Technical Editor, Excellence Magazine

I think what is not being said here is the obvious fact that Erik [Hacker-Pschorr] has touched upon: There will be cross-travel of fuel and oil past the piston rings... oil into the fuel will burn up -but fuel into the oil will thin the mix. If a solvent like Techron (in the fuel, duh) joins the oil, there is the probablility that it will affect viscosity and other factors in the oil to the point of ruined bearings; scored cylinder walls; etc.

If there was 0% cross-travel or blowby and the systems were 100% segregated then this would not be an issue.

VCat

Be good to have some solid facts.

Surely 20oz (0.5l) of Techron or similar in a full tank of 75l, with only a tiny amount of that 'leaching' into the oil over a period of one tank only, could that really be problematic?
Starts getting into the realm of homeopathy quantities!

And don't call me Shirley...

Pcplod

I have run Marvel Mystery oil in mine after I bought it just to clean things up, since I did not know the history of gas by the PO, not because of a problem. If I am following this thread correctly, the wisdom of changing the oil would apply to any additive that cleans out the injectors. Right?? Or are all fuel system cleaners not created equally, and the Techron is more invasive, caustic, whatever than the MM and needs extra attention after use??

ALKada

Ashfin,

You bet ya.
However, if this is to be done, and I think it is a cool experiment that we can all look over the final results and offer each our own hypothisis, I would ask for some good test parameter input from you guys. Perhaps in Rennlist form, I'll start a highly controversial thread with gun play involved on this subject after the test that will cause our beloved moderator to have to put a cold hose to...

I do offer this though. If we as a group do this, I want to solicit suggestions as to what data before and after do you want on the car. Car mileage before and after the test and any other parameters that you guys might think will help in our test. I'm willing to pay the costs and do this BUT it will require a group input so that no one will think that for some reason like I work for Chevron or BG products and have an evil agenda, which I don't. That also raises another question, which product do we test. I personally want to try BG since it is highly regarded and expensive, but since this is a Chevron Techron debate, I can switch to that and we can see what happens.
What do you guys think?

danglerb

I am wondering what sort of harm is expected from a tiny amount of solvent in the oil? ***

A UOA might not detect the Techron directly, but it should show whether or not the OIL is still suitable as oil.

*** A big dose I can see changing out very soon, like a quart of Rislone.

Daniel Dudley

Charles Navarro might have. He has tested a lot of oils...

Maleficio

I'm going to pose this question on www.bobistheoilguy.com and get some opinions from the experts.

Here's the thread I made:
http://www.bobistheoilguy.com/forums...94#Post1999194

Marine Blue

No firm answers yet but it's still early.

Curious to see what the outcome is.

Mrmerlin

Maleficio, I think you may have missed the point of using the Techron injection cleaner in the first place.

It has been suggested to use it just prior to changing the oil due to the fact that it will be loosening deposits in the intake and combustion chamber, and fuel injectors.

These deposits will then be washed into the oil system making the oil dirtier than it would normally be without the extra cleaning effect,

It has NOT been proposed that the techron will dilute the oil.
In fact most of it will be burned in the combustion process, so oil dilution isnt a factor here.
( remember the 928 holds about 9 qts of oil, even if you dumped 20 oz of the techron into the oil sump it would not do any damage, so a moot point)

As an aside Cessna had an oil dilution system installed on its 1959 310 C this was to inject avgas directly into the oil sumps to thin the oil for a future start in cold weather, the avgas would evaporate as the engine ran

That said the best time to use the techron would be just prior to an oil change.

The other part of using the techron is to make lots of short trips so the cleaner will be able to soak into the deposits,
adding the techron then making a long drive will not give the cleaner time to work as well as it can


Does this explanation make things clearer for you?

Landseer

Here's the oil guy...