First order of business: plugs. A buddy of mine was talking to me about the plugs for my car and i was telling him about how special and expensive they are (for plugs at least) and he told me about these iridium plugs that are foul resistant and are supposed to be really good. My question is are there any plugs like these that can be used for rotaries? I have a 12a engine n/a. I also ask this question because my plugs fouled the other day and i had to travel like an hour into Jersey just to get them. I guess around here no one really carries them.



Question number 2: premixing. I have been thinking about blocking off the OMP and premixing my car. I've read that 1-1.5 ounces per gallon of gas is a suitable enough mixture. Is there a difference in quality though between certain 2-cycle oils? I don't mean like brand, but like a difference between 2-cycle for a chainsaw and an outboard, or 2-cycle for air cooled v.s liquid cooled? Last thing i wanna do is put the wrong stuff in my gas and end up paying for it so any feedback and comments are more than welcome. Thank you.

Advance used to carry the stock NGK plugs for right around 5 bucks apiece. It's been a long time since I've bought any, so I don't know if they still do. I've never run iridiums, but I'm sure if you run the correct plug, it'll be fine, but even more expensive.



Regarding premix, be sure to use TCW3 rated 2-cycle oil. It's made for fuel injected engines. Don't use the regular power tool/chainsaw stuff.

i like the Rx8 plugs for the leading position, they are iridium and do seem to last a while in a non rx8, but they aren't cheap!

When I had my fb I used the stock ngk platinum plugs. They're like $7 a plug at o'reily's. Never flooded on me once, even on cold shutdown

@ 1988: i don't even think there is an advanced auto parts around me, if there are any then i haven't seen them im gonna have to look it up. The one time i did find them in NY was at an autopro but like i said no one really carries them around here. Throughout the 3 generations there are 4 1st gens and maybe 1 or 2 2nd gens in my county. Never seen a 3rd gen. And thanks for the tip on the premix, i never woulda known to get one with that certain rating.



@j9fd3s: longevity and a better ignition is what im looking for so those will probably do great. I see numerous rx-8's around my area so they shouldn't be too hard to come by either and i'd rather pay the extra bit instead of driving an hour away, especially with the wonderful time i had to get them last time i needed them lol. Thank you for that bit of info.



@thatpoorguy: yea those are the plugs i have in right now. they're great and only fouled because of my transmission leaking trouble but yea i can't find them anywhere close. I had around 10k on those plugs and it was only the back ones that fouled, the fronts looked good but showed signs of aging. I guess the tranny fluid wasn't getting into the front rotor housing. I've only had it flood once and it was before i changed them the first time. The plugs were also 1 range too cold and i only ran it for 30 seconds just to get it to flat ground so it could get worked on.

My mistake, I used the stock FD plugs lol. Every parts store I've seen carries ngk's. If they don't have the correct ones they can usually get them next day.

i have one more question to ask about premixing: will i have any problems with the fuel filter or lines due to it? Or will it clog up the fuel filter quicker than it normally would?

I haven't had any issues. 2 stroke oil is much thinner than normal oil and then mixing it in the fuel tank thins it more.

Oh ok. The guy I bought my car from ran two filters on the fuel line, the normal one being put in the engine compartment and one put in the back just to keep the connection soi was hoping I wouldn't have to do double duty replacing both filters a lot more often.

Re: plugs and premix
 

is premix a true mix between oil and gas.. or after nonuse for a certain period does one settle due to density or difference in properties..