View Poll Results: DO you pre-mix?
Yes
84
58.33%
No
46
31.94%
never heard of that
14
9.72%
Voters: 144. You may not vote on this poll
Who pre-mixes and who does not?
03-13-03, 10:13 PM
#3
Senior Member
Join Date: Sep 2002
Location: "You take my car, I take your knee caps"
Posts: 724
Likes: 0
Received 0 Likes
on
0 Posts
I dont really like the idea, oil is heavier than gas so it sinks, obvisely, i just dont like the idea of a unperfect mixer, plus i have an s5 and i was told it would go into limp home mode or something
03-13-03, 10:18 PM
#5
Originally posted by ra ra rotory
I dont really like the idea, oil is heavier than gas so it sinks, obvisely, i just dont like the idea of a unperfect mixer, plus i have an s5 and i was told it would go into limp home mode or something
I dont really like the idea, oil is heavier than gas so it sinks, obvisely, i just dont like the idea of a unperfect mixer, plus i have an s5 and i was told it would go into limp home mode or something
not the one I use bro it stays suspende in the Gasonline. Oh and the S5 will only go into limp mode if you take it off the harness jst leave it plugged in and strap it down somewhere. I think someone mentioned a device that can be lugged in instead of th OMP in S5 cars bu i am not sure.
03-13-03, 10:25 PM
#6
Senior Member
Join Date: Sep 2002
Location: "You take my car, I take your knee caps"
Posts: 724
Likes: 0
Received 0 Likes
on
0 Posts
thats pretty sweet, i didnt know there was oil that stayed suspended, might have been nice in my yz 125, i hate trying to shake a full tank of gas on a bike. I still say no though, my cars not modded enouph for anything like that,,, ya know what i mean? haha
03-13-03, 10:32 PM
#7
i did not do it because i think my car is really moded. Hell I only have two performance mods. Intake and Exhaust. But i did it because I read the article on this link:
http://fc3s-pro.com/TECH/FAQ/premix.htm
read it I was convinved by it. I also did it because it would have cost me around 100 dollars to fix all the lines and crap. And another note my car idles better now. I think that "Vacume spide" was a big leak.
http://fc3s-pro.com/TECH/FAQ/premix.htm
read it I was convinved by it. I also did it because it would have cost me around 100 dollars to fix all the lines and crap. And another note my car idles better now. I think that "Vacume spide" was a big leak.
Trending Topics
03-13-03, 11:04 PM
#8
Refined Valley Dude
Join Date: Oct 2001
Location: Kitchener, Ontario (Hamilton's armpit)
Posts: 2,283
Likes: 0
Received 2 Likes
on
2 Posts
Originally posted by ra ra rotory
I still say no though, my cars not modded enouph for anything like that,,, ya know what i mean? haha
I still say no though, my cars not modded enouph for anything like that,,, ya know what i mean? haha
It doesn't have anything to do with modding. That's incidental.
Read the link. 2 reasons why the OMP sucks - very low pressure and narrow oil dispersal. If your OMP lines are empty when you start your 7, it will be several seconds, at least, before oil finally gets to the apex seals. And the narrow dispersal means that the entire seal isn't getting coated.
When you've got oil coming in along with the gas, it's coming in at a higher pressure and much wider dispersal, coating the entire apex seals. Premix is also coming in as soon as you crank the motor, so everything is getting lubricated (meaning protected) right from Go.
03-13-03, 11:17 PM
#9
Displacement > Boost
Join Date: Oct 2002
Location: Mississippi
Posts: 3,503
Likes: 0
Received 0 Likes
on
0 Posts
I will be premixing once my engine is back together. I will not be putting the OMP back on. I am choosing to use premix in place of the OMP for reliability's sake, because crankcase oil leaves heavy carbon deposits on the rotor faces which scrapes on the housings in certain places, leaving scars that hurt the compression. Once you have torn down an oil-injecting rotary, you will see what I mean 
03-14-03, 12:30 AM
#11
Microtech Tuning!
Join Date: Feb 2002
Location: 626 Socal
Posts: 1,828
Likes: 0
Received 0 Likes
on
0 Posts
I would do it, but I don't like the idea of having my OMP still in the engine bay (S5). Plus, I don't think it would pass tech inspection at any events I plan on running in. Is there no other way around this?
03-14-03, 01:06 PM
#22
Lives on the Forum
Originally posted by ra ra rotory
I dont really like the idea, oil is heavier than gas so it sinks, obvisely, i just dont like the idea of a unperfect mixer, plus i have an s5 and i was told it would go into limp home mode or something
I dont really like the idea, oil is heavier than gas so it sinks, obvisely, i just dont like the idea of a unperfect mixer, plus i have an s5 and i was told it would go into limp home mode or something
I've had my car sit up to 6 months at a time with the pre-mix "sitting" in the gas tank.  I peek in the gas tank showed no sediment not any signs of the pre-mix settling (i.e. the color tint was even).
If the pre-mix adheres to the most recent certification (TC-W3), it's designed to stay suspended almost indefinitely.  Unless you're allowing your car to sit in one spot for a year or more, I wouldn't have any worries it's separate.
-Ted
03-14-03, 02:03 PM
#24
Haltech Dealer
When I'm putting in gas people look at me like I'm crazy, they ask me why I am putting oil in my gas tank and i tell them why. They still don't understand and then the second time i tell them it lubes the piston rings and cams.
