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Fuel and Oil Additives

1246 messages,  Last post on Sep 28, 2009 at 7:37 AM

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#41 of 1246 You have seven quarts of oil in your BMW by lokki Aug 29, 2001 (2:57 pm)
It's going to take a lot of leakage past the rings to get any significant amount into the oil. I wouldn't worry about that.   I wonder if the worry is that there is something in Techron that is corrosive to some seals or metals that BMW uses in the fuel system. I sure hope not, as Chevron with Techron has been my gas of choice since 1998 in my 328i. So far, so good anyhow.   Might ask your service advisor exactly what the concern ins next time. I'd be curious to know..
#42 of 1246 I heard the same ... by brorjace Aug 29, 2001 (3:19 pm)
I had heard the same recommendation about Techron ... from someone who (supposedly) contacted Chevron directly.   The recommendation goes that the best way to use Techron is to add it to your fuel tank about 2 weeks before your next oil change. They are concerned that the Techron additive will leak past the rings and contaminate the crankcase oil. After two weeks of driving, they figure you will have completely gone through that tank of 'spiked' fuel, changed your oil to get rid of any possible contamination and you're all set.   So, what happens if this stuff gets into the motor oil?   Perhaps it attacks the anti-wear compounds in oil? Perhaps it breaks down the oil itself? I honestly have no idea.   --- Bror Jace
#43 of 1246 fuel additives, my two cents.. by yooper53 Aug 29, 2001 (4:11 pm)
The owner's manual specifically recommends against using them in my '01 Protege, 2.0L so I'm not sure what I'll do. Don't need to worry about it for awhile. Anyway on my last car I used to put a bottle in twice a year and then only when I knew I'd be burning a full tank of gas that day. i.e. highway trip. My theory is that the cleaning effect should be better at cruising revs and it wouldn't be sitting in the fuel system for days at a time. My concern here was for the various seals, gaskets etc. Given the extent to which I'm mechanically challenged I may be out in left field on this but on the face of it it seems to make sense. Anyone more knowledgeable care to critique the above? I'd welcome it.
#44 of 1246 Before adding fuel or after by majorthomecho Aug 30, 2001 (6:20 am)
This question was touched upon briefly, but what do people think is the best method of adding the fuel injector cleaner. Should I fill my tank with gas and then add the additive or should I add the additive and then fill my tank? STP merely says to use the stuff with 10 gallons of gas. Says nothing about which to put in the tank first - the gas or the additive.
#45 of 1246 I thought Chevron put Techron by stealth1969 Aug 30, 2001 (7:47 am)
in it's gas. Granted, I don't think it is as concentrated. But if they only recommend using it 2 weeks before an oil change does that mean they would only recommend using their gas 2 weeks before you change the oil? Don't think Chevron would recommend that. Is it only because of the added concentration or is it Techron itself? If it is Techron, then is the BMW dealer saying to stay away from Chevron? Doesn't compute to me.
#46 of 1246 I'll check for details by rhmass Aug 30, 2001 (9:00 am)
I'll check with the service manager for details next time I am in for service. The interesting thing is that Techron was initially suggested by the BMW service when I bought my first car from them. After a couple years, the service manager mentioned in passing not to use it any more as BMW recommended against it. I didn't hail his "warning" and have continued to use Techron with all later models without experiencing any ill effect whatsoever. I brought this question up when I noticed postings on this thread saying Techron was only to be used prior to the oil change. My use has never coincided with service but I do adhere to the 4000 miles. Work fine all these years. Will post when I get specifics.
#47 of 1246 My experience by armtdm Aug 30, 2001 (9:13 am)
First, it makes more sense to add it before filling up to dispurse the additive. Adding it later, although probably not making any difference, could permit a huge influx of the stuff into the pump and injectors if not mixed with enough fuel.   Anyway, I have used an additicve in every tankful of a few cars (Amsoil PI) and also Techron in several more and I have never seen any indication of a problem with my oil analysis. I never did it before changing the oil either.
#48 of 1246 Techron density by q45man Aug 30, 2001 (9:27 am)
Since Techron is the same density as gasoline and fuel is added at top of tank and electric fuel pumps suck from bottom of tank it takes a couple of hours for the pump to circulate enough gasoline to make a homogeneous mixture of 12 oz in 20 gallons. Driving around will slosh the fuel around speeding up the blending..........much the same way fuel additive are poured into top of tanker trucks to make Name Brands from the generic bulk facilities by the time it gets to the first station GUNKO SUPREMO becomes Texaco/Chevron/BP..... lots of magic in little cans.
#49 of 1246 techron and motor oil by sdayalani Aug 30, 2001 (10:19 pm)
this is the response i rec'd from chevron re. techron and its ability to dilute motor oil.   Thanks for using our product. A small amount of the product can pass by the rings of an engine, diluting the oil, however that will be of no serious concern. It is little different from the fuel and blow-by products which also can effect the oil, in the same manner.   Perhaps it would be possible to use Techron on the same cycle as your oil changes. An oil change each 5,000 km and a bottle of Techron at the same time.   > -----Original Message----- > Sent: Sunday, August 19, 2001 8:51 PM > To: lubetekchevron.com > Subject: Techron Fuel System and Motor Oil > Importance: High > > Hi > > I regularly use Chevron Complete Fuel System Cleaner (with Techron > Concentrate) every 5,000kms in my 1999 Mazda Protege LX. > Since Chevron does not have a presence where I live (Toronto, Canada), I > use your product to keep my fuel system clean > > I came across some discussions in a Bulletin Board which stated that Fuel > system Cleaners should be used only prior to an oil change, since they > have an adverse effect on the additives contained in Motor Oil. An article > specifically stated that "Even Chevron recommends using the fuel system > cleaner prior to an oil change, since they deplete the additives in motor > oil". > > Is this true, since I use the Techron Fuel System Cleaner based on mileage > accumulated, and totally independent of when I get my oil changed. > > Thanks very much for your help ! >
#50 of 1246 post #69 - stealth1969 by sdayalani Aug 30, 2001 (10:34 pm)
on their website, chevron says that using their concentrated techron cleaner wont do any good if one is a REGULAR user of chevron gas (regular/supreme ..doesnt matter, althouh supreme has a higher concentration of techron).   according to chevron, usage of the concentrated techron cleaner is an insurance for people who occassionally get that bad tank of gas once in a while. IMO this mainly applies to people who:   a) do not regularly fillup with chevron, or b) do a lot of long distance road trips, passing through areas where chevron does not have a presence (north of kentucky for example).   under normal circumstances the limited dosage of techron contained in their gasoline does not cause any harm to motor oil, but its just because the dosage of techron in their fuel system cleaner is 10 times more powerful, thats where this problem of oil additive dilution becomes an issue.   another good product i've heard a lot of about is Redline's Fuel System Cleaner (SI-1 / SI-2). BMW recommends it and even has a part number specifically for it in their parts catalogue. this is the response i rec'd from Redline regarding the same question that I'd put forward to chevron.   >Some fuel system cleaners can only be used >occasionally and will >build up damaging concentrations in the oil. This >>is not the case >with the Red Line SI-1 or SI-2 Complete Fuel >System Cleaner, they can >be used continuously and this is the most >effective use of the >product.   >What is the recommended frequency of using Redline's Fuel System Cleaner?   >I would use it continuously, about 1.5 ounces to >10 gallons of fuel >after the initial full bottle.

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