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Hey thanks for the reply so would you suggest going from 15% to 20% or would you say that 15% is ok I got a full bottle wondering if I must go swap it for 20%You want to keep your percentage at between 20 and 30%. This is actually a kind of heated subject. Everyone has opinions. Personally, I run 20%. I just haven't had a need to kick it up yet. The general consensus as I have read is that the 30% will run stronger and faster but will shorten engine life. I have no evidence to support or negate this tho. I have also read that they run hotter with the higher % fuels... This has its obvious consequences of accurate. Again, not sure but it tends to make sense. For just bashing around, no races to win etc, I would stick with 20%. Mine are easy to tune, run well in all weather and have yet to blow anything up. Now I'm gonna go hide in a corner with a bowl of popcorn and watch the fireworks!
Thanks mate you've been a great help I ended up swapping the 15% for 20% and will wait for the rain to stop and send the car out for a run. I also got the R5 glow plug.I don't know anyone who runs under 20% on a surface rig. 15% works for planes. I haven't seen it run in a car so I won't say to toss it but I wouldn't run it personally. It just seems like a tuning headache and lower performance to boot. Just my personal thoughts on what I have read tho. I have seen up to 30 and maybe someone running higher (like on a track, although they wouldn't admit to it as it's illegal). 30% really gets them going, no doubt. One thing you should be aware of... You do need to retune for a change in %. It is also recommended by manufacturers that you do not change. Stick with it if/when you step it up.
You should verify the oil content in the fuel you have as well. If it is too low, toss it for sure!
I have read that you can add castor oil to your fuel but I would stay clear of that personally.
I should mention, 7.5 is the lowest I have heard of in fuel and have heard above 20% but again, not sure if that. Some fuels don't even tell you which can be risky I suppose. However, I can't see traxxas or blue thunder not putting enough oil in their fuel and blowing thousands of engines either.
However, where the fuel mixtures and ratios change with altitude, I am not sure how the %'s change to accomodate. 15% nitro is an aircraft fuel to the best of my knowledge.
Lol that is way beyond me I don't know how to do gearing and break it in again explain please