Gas/Oil Premix Thread
#501
You'd be hard pressed to come up with a summary in light of all the differing opinions/results here. 1/2 ounce per gallon of gas (1:256) seems to be a popular ratio, but don't forget to factor in the oil injected by the OMP. Too much of the stuff might clog your fuel filter, but it seems that the fuel filter clogging some experienced was caused more so by low quality gas, cold temperatures, using 2-cycle oil not designed for premixing, or combining it with other fuel additives (esp. Lucas UCL). Avoid these factors if you can.
Your best bet would be to premix with a proven synthetic product: Idemitsu, Amsoil Saber, Royal Purple. Lube Control FP60/Plus seems to be both compatible with premix and an effective fuel system cleaner/lubricant. But it's no substitute for premix oil. Add your cocktail of choice to the tank just before you fill up to ensure complete mixing. Lather, rinse, repeat.
Your best bet would be to premix with a proven synthetic product: Idemitsu, Amsoil Saber, Royal Purple. Lube Control FP60/Plus seems to be both compatible with premix and an effective fuel system cleaner/lubricant. But it's no substitute for premix oil. Add your cocktail of choice to the tank just before you fill up to ensure complete mixing. Lather, rinse, repeat.
#502
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^ Thanks.. Does it matter what octane of gas you run? I've been running 87 without problems for the longest time. I'm guessing I should bump up to 89/91 if I premix? (I use Shell or Chevron which seems to be the best.)
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You'd be hard pressed to come up with a summary in light of all the differing opinions/results here. 1/2 ounce per gallon of gas (1:256) seems to be a popular ratio, but don't forget to factor in the oil injected by the OMP. Too much of the stuff might clog your fuel filter, but it seems that the fuel filter clogging some experienced was caused more so by low quality gas, cold temperatures, using 2-cycle oil not designed for premixing, or combining it with other fuel additives (esp. Lucas UCL). Avoid these factors if you can.
Your best bet would be to premix with a proven synthetic product: Idemitsu, Amsoil Saber, Royal Purple. Lube Control FP60/Plus seems to be both compatible with premix and an effective fuel system cleaner/lubricant. But it's no substitute for premix oil. Add your cocktail of choice to the tank just before you fill up to ensure complete mixing. Lather, rinse, repeat.
Your best bet would be to premix with a proven synthetic product: Idemitsu, Amsoil Saber, Royal Purple. Lube Control FP60/Plus seems to be both compatible with premix and an effective fuel system cleaner/lubricant. But it's no substitute for premix oil. Add your cocktail of choice to the tank just before you fill up to ensure complete mixing. Lather, rinse, repeat.
Also, I ordered a case of Idemitsu premix from Mazdatrix and they are out of stock (as expected). Chris, the rep I spoke with, says they will have stock 1st week in October. My plan was to premix Idemitsu with UCL but in light of the pump problems I may just stick with the Idemitsu. I ran my first tank of just UCL (4 oz) this week. My car runs smooth as is, since it's new and broken-in, but the UCL did seem to help. Could be the placebo effect though.
#507
Got Another Rotary
http://www.patentstorm.us/patents/5308524-fulltext.html
Adding some FP60 or FP plus will assure the rich fuel mixture with the Premix/OMP oil addition will not carbon things up as much as these are excellent cleaners that happens to be very lubricious as well - they will not impact the oil lubricating film like many cleaners will.
3 oz of IRP with 2 oz of FP Plus (or 3 oz of FP60) per 12 gallon refill is what I use and recommend. You could go with 4oz IRP and 1 oz of FP Plus (2 oz of FP60) if you want to err on the lubrication side a little.
Lucas UCL is a good lubricant, but not really a very good cleaner, so it is kind of redundant to mix this with any 2-cycle as it's formula is much like a 2-cycle. Also, several here that have had the fuel pump clogging issues have been using LUCL with other products - don't know for sure if it's a factor or not - but I if I wanted to use LUCL I would use it alone and would not mix with other additives.
#508
Got Another Rotary
Whew, 21 pages later....
Ok, finally got around to reading this... Going to start premixing this weekend. I have my list of stuff that will work, so I'll just check around the PB/AZ/AAP to see what they got. I have a gas mileage log with every fillup since I got the car, so I have a pretty good handle on what my gas mileage looks like (18.5 hw / 13 city - "You have a heavy foot! You'll blow yourself to pieces!!")
Anyway, got a couple questions:
1) Anyone using premix in colder climate? I plan to do alot of winter driving, and temps in upstate NY can get to -40 at times. Any issues with the premix clumping or gelling and settling on the bottom of the gas tank?
2) In general, anyone have any issues starting the car after letting it sit a while (say a week or more)?
Ok, finally got around to reading this... Going to start premixing this weekend. I have my list of stuff that will work, so I'll just check around the PB/AZ/AAP to see what they got. I have a gas mileage log with every fillup since I got the car, so I have a pretty good handle on what my gas mileage looks like (18.5 hw / 13 city - "You have a heavy foot! You'll blow yourself to pieces!!")
Anyway, got a couple questions:
1) Anyone using premix in colder climate? I plan to do alot of winter driving, and temps in upstate NY can get to -40 at times. Any issues with the premix clumping or gelling and settling on the bottom of the gas tank?
2) In general, anyone have any issues starting the car after letting it sit a while (say a week or more)?
If you need more miscibility in the dead of winter, mixing it with a thinner cleaner/lubricant, like FP Plus, MMO, etc., that has some solvents in it does help the miscibility.
2. Short chain 2-cycles, IRP included, will not "settle out" of the fuel once it has been thoroughly mixed in from the fill up (2-cycles with long chain oils can and sometime do as things get colder). So, you should not have any starting issues if your car sits a while with IRP premix. Mine has sat for several weeks without being driven and I have never had an issue.
#510
On that issue, read this from Royal Purple's site:
here: http://www.royalpurple.com/prodsi/tcwiiii.html
How many RX-8 owners really live in climates with temperatures below 20 deg F, though?
Royal Purple 2-Cycle TCW III® is suitable for premix in snowmobiles but due to cold soak (low temperature pumpability issues on oil injected snowmobiles) Royal Purple Snow 2-C™ is recommended for operation in temperatures below 20° F.
How many RX-8 owners really live in climates with temperatures below 20 deg F, though?
#511
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#517
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Being that the IRP is out of stock, I am thinking of starting with the Amsoil Saber.
I'm thinking of getting the 3.5oz bottles and using that are fillups. (10-gallonish).
As far as a cleaner, would 2 oz of FP 60 work?
Thanks
I'm thinking of getting the 3.5oz bottles and using that are fillups. (10-gallonish).
As far as a cleaner, would 2 oz of FP 60 work?
Thanks
#518
Got Another Rotary
Those "3.5 oz" bottles you are referring to usually hold about 5 oz if you fill them all the way up - so you should have room for your 3 oz of 2-cycle plus 2oz of FP60 (good amount).
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Make sure to use the Amsoil Saber Professional as it is full synthetic, not normal Saber which is a dino 2-cycle.
Those "3.5 oz" bottles you are referring to usually hold about 5 oz if you fill them all the way up - so you should have room for your 3 oz of 2-cycle plus 2oz of FP60 (good amount).
Those "3.5 oz" bottles you are referring to usually hold about 5 oz if you fill them all the way up - so you should have room for your 3 oz of 2-cycle plus 2oz of FP60 (good amount).
#520
One nice way to measure and dump in the mix is to buy a 32oz bottle of "Sta-bil" fuel stabilizer ($12) and just dump it out and use the bottle since it has built in dosing, a long neck and refillable. Also large enough to get 8 fill ups out of it before needing to refill.
#521
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Does not sound like you guys have been following the thread where we have been discussing increased premixing and its effect on fuel economy .
I am doing a trial myself to see if I get similar results to what others have been finding . AT 180:1 ratio I got 500kms from my last tank (110-120 km/hr cruising mostly and 55litres used) which is an alltime record for me . Previous best was around 440km so thats better than 10% improvement . Inconclusive for me at this stage as that was only one tank - but looking good .
I am doing a trial myself to see if I get similar results to what others have been finding . AT 180:1 ratio I got 500kms from my last tank (110-120 km/hr cruising mostly and 55litres used) which is an alltime record for me . Previous best was around 440km so thats better than 10% improvement . Inconclusive for me at this stage as that was only one tank - but looking good .
#522
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I'll know this weekend how mine has improved. Mixing 4-5 ounces per tank of UCL. What ratio's is anyone else using with UCL? Just curious.
Started premixing with UCL a few weeks ago. I also changed plugs and air filter all at the same time. I can tell a big difference in the way the car runs now. I figured its probably a combination of all those things put together.
Started premixing with UCL a few weeks ago. I also changed plugs and air filter all at the same time. I can tell a big difference in the way the car runs now. I figured its probably a combination of all those things put together.
Last edited by MikeTyson8MyKids; 09-24-2007 at 07:01 PM.
#523
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I just put in 4oz of UCL with my last fill-up. Too early to report results as I decided not to measure fuel economy this time, but the engine does seem to be idle smoother. Could be my imagination.
I ordered a case of Idemitsu Rotary Premix from Mazdatrix. They are on backorder until next week supposedly. I'm going to finish my bottle of UCL then switch over when the Idem comes in.
I ordered a case of Idemitsu Rotary Premix from Mazdatrix. They are on backorder until next week supposedly. I'm going to finish my bottle of UCL then switch over when the Idem comes in.
#524
I noticed with mixed driving I was getting ~19.5 mpg when I was mixing the UCL at 4oz a fillup but I have since run out of it and also plan to switch to FP60 and Idemitsu so I'm flushing the tank with 3-4 full tanks with no UCL just to be safe. But now without the premix I'm averaging 18 mpg... Nothing too scientific but my mileage is definatly down.
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Does not sound like you guys have been following the thread where we have been discussing increased premixing and its effect on fuel economy .
I am doing a trial myself to see if I get similar results to what others have been finding . AT 180:1 ratio I got 500kms from my last tank (110-120 km/hr cruising mostly and 55litres used) which is an alltime record for me . Previous best was around 440km so thats better than 10% improvement . Inconclusive for me at this stage as that was only one tank - but looking good .
I am doing a trial myself to see if I get similar results to what others have been finding . AT 180:1 ratio I got 500kms from my last tank (110-120 km/hr cruising mostly and 55litres used) which is an alltime record for me . Previous best was around 440km so thats better than 10% improvement . Inconclusive for me at this stage as that was only one tank - but looking good .