I remember those days...or do I?

 

I have 8 oz bottles that I use for my premix. I will stick w/ 4 oz for street and go to 8 oz for track.

 

i'm using 1 quart bottles, this is getting silly i think i am gonna hook up the mop

 

I also used 1 quart bottles. You could always adapt a mechanical oil metering pump to the 20B.

 

I'd like to clear some of this up on this subject.



I think the 128:1 ratio (one ounce of 2-stroke oil per one gallon of fuel) is more sourced from the aircraft rotary-engine world of things; atleast, that's where I got the idea about 5 years ago. Those guys run a different environment with the 128:1 ratio: They run constant 5000rpm's all of the time.



Excluding racing conditions (road race, drag, etc.), for street driven applications, we should stick to something more akin to 8 to 10 ounces of oil per full tank of gas (roughly 1/2 to 3/4ounce of oil per gallon of fuel).



B

 

stupid question but why premix?

 

Our cars came stock with an Oil Metering Pump, which pumped engine oil into the combustion chamber to help lubricate the seals. If you still have this on and it works then you have no need for premixing. But because many people run synthetic oil, which isn't good for combustion or for seals, they have removed this system, so it won't pump their synthetic oil into the combustion chamber. To keep the seals lubricated they have resorted to putting an amount of oil, usually two stroke, into their gas tank every time, or most of the time, they fill up. This takes the place of the OMP. On that note, I use the 1oz per gallon rule, and usually fill up with 14oz. Although BDC raises this issue that it came from the avaition side, which I was unaware of, I still think that I will use the same amount. Only because I don't have the money to buy an extra vehicle to test amounts of oil per gallon. Although I believe Banzai is testing different brands in an engine, or at least that was what I was told. If he is I may ask him if he can test different amounts and see if his results show anything. Back on topic, I also only use Yamalube. I have used several others before, but I have found that my car seems to like yamalube better, and it smokes less. I say smokes less because, up until a few weeks ago my car had really bad stock injectors, to the point that one had a cracked end cap, and they were flooding the hell out of my system at all times, so whenever I started my car it would smoke a lot. Unfortunately I haven't gotten my car running since then to see if the smoking has decreased, or to see if the amount of oil that I'm adding is causing it to smoke.



- Hand

 

With all due respect.



Have you ever seen a rotor housing from an engine that relied soley on its OMP for lubrication?



Have you seen one that used premix?



The OMP housing has a nice shiney line around about 1/2 to 5/8 of the housing down the center. The line is about 1/8" wide. That is the extent of lubrication the OMP delivers.



I for one did not want to premix it is a lot of hassle and I honestly didn't want the mess or trouble of buying and adding premix at every fill up.





When Kandy @ Pettit racing pulled the 2 housings for me to see I was sold on the fact that premix is the way to go. The OMP is garbage.



Pettit just tore my engine down for a street port and 3mm seals. The first thing he said was that I must be premixing because my housings had barely any sign of wear.



I was using Amsoil premix and still have a case of it. I am now using Pettits Protek premix. It was designed w/ rotary engines in mind.



I keep the Amsoil for road trips because it is in 8oz bottles and is easy to add at fill up. I use the empties for my Protek because it is in 1 gallon containers.



Go with premix you will not be sorry.

 

bruce from rotary aviation builds all of my motors and he told me 1/1 on oz/gall.

 

Jims, you seem to have a lot of experience with this stuff. What is the difference between me using the standard Castrol or other easily available TCW3 stuff vs. the Pettit or Amsoil? How are they better? I figure I'm already doing my engine enough good by premixing rather than OMP.



Chris