Premix!!! Read this please!
11-09-09, 05:13 PM
#30
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is settled, your next question will be:
Do you or anyone else have the answer for these questions?
02-02-17, 12:23 PM
#32
well, I run 1/2 quart of 2 stroke per every 3/4 of a tank (roughly 12.5 gallons), and the engine I took apart from a blown coolant seal was absolutely mint: no scoring on the rotor housings, no real carbon buildup on the rotor faces, and after 40,000 miles on that engine, I had to get the ten thousandths micrometer out to measure apex seal wear, which was only .0002 less than what they measured new.
Therefore, I feel that this is an absolutely acceptable ratio of premix.
Therefore, I feel that this is an absolutely acceptable ratio of premix.
This is the same equation I'm thinking of using on my 1990 vert N/A still have the omp. However which brands would you recommend? And how abusive are you with your engine?
02-02-17, 12:44 PM
#33
Smells like 2 stroke.
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Since I started this thread, I have been running Walmart "Super Tech" TCW-3 because it was the cheapest gallon of 2-stroke oil I could find. That's more than 7 years with no issues. I don't think you need to run 100:1 ratio if you're keeping the OMP, and especially if you run a catalytic converter as it will quickly become ruined. I'd start at 200:1 and go up or down from there if you need to.
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rx7junkie170 (07-11-19)
02-03-17, 09:00 PM
#37
well, over the course of the last engine that went about 80k miles, it used roughly 4,706 ounces of 2 stroke oil. for me it just made more sense to not spend more than i had to since that is roughly 37 gallons of oil, which came out to be in the neighborhood of about $450.
at $10 a quart for the higher end oils it would come out to be about $1600 after tax.
small difference, i know. though i drive my car much less now i still use the cheaper stuff, because it works just fine.
at $10 a quart for the higher end oils it would come out to be about $1600 after tax.
small difference, i know. though i drive my car much less now i still use the cheaper stuff, because it works just fine.
Last edited by RotaryEvolution; 02-03-17 at 09:04 PM.
02-03-17, 09:42 PM
#38
Since I started this thread, I have been running Walmart "Super Tech" TCW-3 because it was the cheapest gallon of 2-stroke oil I could find. That's more than 7 years with no issues. I don't think you need to run 100:1 ratio if you're keeping the OMP, and especially if you run a catalytic converter as it will quickly become ruined. I'd start at 200:1 and go up or down from there if you need to.
02-03-17, 11:23 PM
#39
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"Seems to run no different" is exactly what would be happening if your c̶o̶r̶n̶e̶r̶̶ apex seals were carving out your housings.
Last edited by PaladiNSX; 02-04-17 at 10:19 AM.
02-04-17, 08:38 PM
#43
I still have the OMP tonight was the second night I ran it with premix at the same ratio I did notice the idling was smoother. I'm tempted to go 0.25 more to make it 0.75/gal what do you think?
How would the apex seals carve the housings after mixing? Shouldn't it be opposite? And thanks for letting me know that BTW.
Last edited by FC3S_Bat; 02-04-17 at 09:01 PM.
02-05-17, 10:49 AM
#45
im using the highest octane rating I can find which is tipically 91 since I read that premixing can bring your rating down, also love getting that weird look when I pull out the funnel and bottle to drop some in lol
02-05-17, 10:58 AM
#46
you don't need high octane for an n/a, plus think of this, at 128:1 ratio your octane would only be lowered by a maximum of .8% X 87= .7 tenths of an octane point making it more or less 86.3 octane if running 1 oz per gallon, 86.7 at .5 oz/gal. not enough to worry about, and virtually what the cars dealt with while injecting the crankcase oil for lubrication.
Last edited by RotaryEvolution; 02-05-17 at 11:01 AM.
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