Only had my 8 about 6wks, an '05 w/56k (never premixed) one owner miles. I started premixing using 6oz/ per tank of Lucas 2 stroke. It seems to use more gas, anyone else confirm or dispute that? I also just did an ignition tune up and was thinking it should've improved regardless? I'm thinking of cutting back because it seems too rich. I also just replaced the air filter so it's not that...Car runs like a raped ape though, just trying to not screw it up.

 

if you havent yet done so read the new owners thread about 12 times no really read this!

 

Yes thank you for that, and I do get what it says about the whole car being maintained. Was just looking for some input on premixing vs not.

 

No, it won't affect fuel economy to a degree that you can measure without controlling for all other variables.

 

Premix doesn't affect fuel mileage. It can't. Driving habits sure do though. If you've only had it 6 weeks I don't think you have enough of a baseline to determine what is normal mileage for you and the car. One bad tank isn't conclusive.
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To be fair, if he has had it for 6 weeks, he has probably been through 17,653 tanks of gas, so there is that.

 

to some extent i have found that premix helps gas mileage.. but i drive like a puss puss when in daily driver mode. and all this is based on actually driving a long time on the interstate.

beers

 

I really appreciate all the feedback! So much to learn about these cars...

 

I premix every 4 out of 5 tanks and notice no difference on the 5th tank vs. the other 4. MPGs are low 20s for mixed driving, running the AC in the summer or driving habits has a bigger impact.

 

 

The instructions that came with my bottle said to do it that way, I think it is something to do with the fuel pump filter sock thing being more prone to blockages if you constantly premix.
But I am also open to changing things if people have a suitable reason why, would be easier than having to keep track of the tanks.

 

 

It was, it was an Idemitsu Rotary Baum kit, included the measuring bottle, funnel, 2 bottle of Idemitsu and instructions. Whether its right or wrong I don't know, but I had read similar things in the long premixing thread. I never run the 4th (or any tanks) to completely empty so its likely the 5th tank is still premixed just at a much wider ratio than tanks 1-4.

 

 

FWIW I put it in almost every tank and I never have any issues. I don't know where the "skip every 5th tank" thing came from.

 

^ Yeah, me too. I use Lucas Symi-Synthetic 2 Cycle Oil and premix 8 oz per tank, every tank. I have never had an problems nor noticed any difference in MPG.

 

Like Steve I do 8 ozs a tank. which is a 256:1 ratio assuming you fill a completely empty tank, in reality its more like when the gas light comes on so seems to be about 14 gallons of fuel so ~ 225:1 or so.

Maybe I will just do every tank then Jinx, but I just rigged up a nifty tank counter device to the bottle so I could easily keep track, guess that was a waste lol.

Also while we are on the subject of premixing, any input about premixing and then letting the car sit over winter?