I went to the auto parts store this evening and purchased a product called RXP Gas Kicker. The label says it is an engine decarbonizer. It isn't so much for cleaning injectors (the guy recomended Sea Foam for that) but for removing carbon from the combustion chamber. However, it does list cleaning fuel injectors as a benefit as well as significantly reducing emmisions. I think I will use one bottle of RXP and one bottle of Sea Foam after each oil change. Anyone else have any observations about this product from use?

 

I know back on the rx7 forums people talk lots of good stuff about Sea Foam, but I've never heard of that RXP stuff. I'd be careful what you put into your rotary--some products are too abrasive (because they are designed for ****-ons) for the sensitive parts of the rotary engine. Being a die hard rotarhead, I personally use MMO (Marvel's Mystery Oil). I don't use it yet for my 8, but I use it for my 7s--I drop it in the oil and in the tank all the time.

FS

 

also be careful about how these products affect the nylon sock in the gas tank( i think the 8 has them) as some will deterioate that sock. STP stuff will i hear. Techron sure helped my rough idle. My shop reccomends 44k by bg prods but when that is unavailable then they recommend the techron.
olddragger

 

Chevron gas has Techron in it. I use it all the time, but I like going to Union 76 sometimes.

Oldragger, aretalking about a techron additive, or gasline?

 

I'm emailing one of the development technicians about some of these concerns. I also found on the bottle this statement "Guaranteed not to damage sensitive engine parts".

 

The easiest way to keep carbon buildup off of your rotors is to hit redline fairly often. If you aren't hitting it ever time you take the car out, you aren't doing it enough.

 

the additive, i use shell gas which also uses some type of additive. i usually wind her up to 8k once a day in 2nd or 3nd gear. that doesn't last very long. so i added a bottle of techcron and it did make my idle better.
olddragger

 

i'd love to do that, but i do mostly city driving with stop and go traffic.

 

I got an email back from the creator of RXP and he said the product is safe in any engine including the Rotary. He says he has gotten good feedback from customers who have used it on older Mazda vehicles. Personally, I'm going to use this stuff instead of redlining it once a day. I'd be back to 13 mpg.

 

By far the best product to keep the inside of your engine clean is sold as Yamaha Ring Free at their Outboard dealers. It is really concentrated Techroline - Techron. Chevron supplies it. The name varies if it is in their gas or as a aditive, but really the same stuff.

Outboards run at a much higher steady state power setting than most all other engines. Back in the late 80's many outboards were failing from stuck - carboned up - piston rings (2 stroke problem). The problem was much more common on heavy under powered boats in some areas of the USA. It was found that the fuel in some areas has much more heavy end products and make more carbon. I can give you more background info, but enough for now.

Many "injector cleaners" now use Cheveron techron, but the Yamaha "Ring Free" has a much higher concentration. DOn't remember the actual number, but something like 60~80% while most cleaners are 5~15%.

I have been using Ring Free in my Rotary PU, RX7s (2), my RX8, +++. My 89 astro van has 120K miles on it (all by my family) and the throttle body looks new inside, the engine uses no oil, and still easily passes the annual smog test with the original converter. I put in a pint every 6 months.

Only 2 problems. One is on a older vehicle the techron will clean the fuel tank and that can plug the fuel filter. Second, also older vehicle with a lot of internal carbon, is plug fouling caused by the chuncks of carbon breaking off. Starting when new, or low treat rates at first will eliminate the plug fouling.

Yes I work for Yamaha. That is why I know all about Ring Free. But just ask any long time Yamaha Outboard dealer about it. Our customers have learned how much it really helps.

 

Good info TRZ. I wonder if it is about the same as the 44K by BG products?
olddragger

 

Many products are using Techroline. Just add solvent and a label. Check, if you can find, the consentration. Many low treats are easy to spot by how thin they are with all the solvent. The ring free is thicker.

Actually the EPA now requires a agent like techron in all fuels to help the emisions. Chevron can not tell us who uses their stuff as the gas companies want this to be confidential. The Yamaha agreement is only for off road (marine) so we can not advertize use for autos.

 

Well, I found a local Yamaha dealer and I'm going to add a 12 oz bottle of Ring Free tonight when I fill up. Hopefully it'll help my idle. I'll check if it changes my mpg as well.....

 

OK...recently on a thread about Chevron gas I stated I would use it exclusively from now on because my 8 seems to love it.

I think it's safe, but do you think using Chevron (virtually exclusively) would be "bad" for my rotary? I too can not rev it to 9K everyday (probably every other day) because of traffic but I want to keep my rotary for a LONG LONG time so I’m trying to baby it as much as possible…in regards to making sure it’s clean and happy.