Gas/Oil Premix Thread
04-04-2010, 09:34 PM
#2702
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Lucus UCL + Castrol Power RS TTS 2stroke
This is my first time pre mixing, i've read the first couple of pages of this thread XD (long thread). From the recommendations of many, i bought Lucus UCL and a full synthetic 2stroke oil (castrol power rs tts, found this at a local cycle shop). 50-50 mix of both, used a empty laundry detergent bottle and a small gas cleaner bottle (6oz), dumped a quart of each mix. Filled that small gas cleaner bottle and poured it in the gas tank. And i gotta say, the engine definitely idles alot better, shifting seems smoother than before. oh prior before premixing, i also did an oil change and used castrol 20w-50, probably helped as well. I remember my shift **** wobbling like crazy on a stop, now its more subtle. It feels like i'm driving a new rx8 off the assembly line. I'm very happy with the result, not sure about fuel economy but from what i was reading hopefully its better than my 14mpg prior pre mixing. I thought i'd just share my little experience, hopefully it helps someone here who'd like to premix. 
heres some photos of my mach-up. oh and these bottles fit perfectly behind the back seat's center compartment :D.
heres some photos of my mach-up. oh and these bottles fit perfectly behind the back seat's center compartment :D.
Last edited by Junirol; 04-04-2010 at 09:37 PM.
04-04-2010, 10:19 PM
#2705
This is my first time pre mixing, i've read the first couple of pages of this thread XD (long thread). From the recommendations of many, i bought Lucus UCL and a full synthetic 2stroke oil (castrol power rs tts, found this at a local cycle shop). 50-50 mix of both, used a empty laundry detergent bottle and a small gas cleaner bottle (6oz), dumped a quart of each mix. Filled that small gas cleaner bottle and poured it in the gas tank. And i gotta say, the engine definitely idles alot better, shifting seems smoother than before. oh prior before premixing, i also did an oil change and used castrol 20w-50, probably helped as well. I remember my shift **** wobbling like crazy on a stop, now its more subtle. It feels like i'm driving a new rx8 off the assembly line. I'm very happy with the result, not sure about fuel economy but from what i was reading hopefully its better than my 14mpg prior pre mixing. I thought i'd just share my little experience, hopefully it helps someone here who'd like to premix. heres some photos of my mach-up. oh and these bottles fit perfectly behind the back seat's center compartment :D.
heres some photos of my mach-up. oh and these bottles fit perfectly behind the back seat's center compartment :D.
04-05-2010, 09:57 AM
#2706
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will UCL clog up the fuel filter with a pre mix? how so? XD i've read the first 15 pages most people recommended UCL + full synthetic 2stroke oil. Please enlighten me XD, i rather not damage my car over time. I do regularly change out oil/filter every 3k, how long will my filter last with the premix i'm doing (UCL+castrol rs tts)?
04-05-2010, 11:16 AM
#2707
SARX Legend
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There is no definite data on this and looks can be deceiving but I used UCL (still am until my supply runs out) and my fuel pump sock "looked" pretty bad. But I must also say that even though it looked bad, the pump was functioning properly as far as I know.
04-05-2010, 02:43 PM
#2709
will UCL clog up the fuel filter with a pre mix? how so? XD i've read the first 15 pages most people recommended UCL + full synthetic 2stroke oil. Please enlighten me XD, i rather not damage my car over time. I do regularly change out oil/filter every 3k, how long will my filter last with the premix i'm doing (UCL+castrol rs tts)?
Lucas UCL
premix mixed with a cleaner of some sort
never heard of anyone clogging a filter while using straight 2 stroke premix - on it's own .
Coincidence ?
04-06-2010, 04:56 AM
#2711
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Premixing with Idemitsu for 18 641 miles and I took my fuel pump out in order to see the condition of the filter
This is the condition of my filter with only 18.641miles of very light premixing with Idemitsu. I was adding 200-300ml per fuel tank.
A technician told me that those black substance is not premix but it is fuel dirt that sometimes go from the bottom of the gas station tank to our car fuel tanks. I guess that only chemical analysis can prove if this black substance is dirt or premix.
However, my fuel pump was working properly with no issues at all even if it was empty or full with fuel.
04-06-2010, 06:10 AM
#2712
rotaryPilot your filter looks in good working conditions 
Our premix ratio is pretty inconsistent, even with 300ml over 60litres!
I have always got a spare fuel filter sock just in case, but that's just because i want to remove the OMP sooner or later
Our premix ratio is pretty inconsistent, even with 300ml over 60litres!
I have always got a spare fuel filter sock just in case, but that's just because i want to remove the OMP sooner or later
04-09-2010, 05:18 AM
#2713
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I mean how stupid can you get...on your second or third replacement engine, but still premixing!!
Thoughts? This is from another thread.
https://www.rx8club.com/series-i-tech-garage-22/mmo-caution-premix-192868/
https://www.rx8club.com/series-i-tech-garage-22/mmo-caution-premix-192868/
04-09-2010, 10:05 AM
#2715
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se to drive an RX8