2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

What is premix?

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Old May 2, 2006 | 01:43 PM
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What is premix?

I am really new to cars expecially the rx-7. I have noticed a lot of peeoples saying stuff about premix...what is it?
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Old May 2, 2006 | 01:49 PM
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oil that you mix with your fuel

it allows for better lubrication of the apex seals since its delivered with the gas, as well it reduces carbon build up since its designed to burn - whereas the regular motor oil that owuld normally be injected for apex seal lube is not designed to burn off
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Old May 2, 2006 | 01:54 PM
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Does it help prolong the life of a motor? Should I get some? How do I use it?
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Old May 2, 2006 | 01:56 PM
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yes it will help - but really you should search this - it has been covered numerous times....

mix about 100:1 ratio, you'll need to disable the metering oil pump and never ever forget to put it in when you fill up
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Old May 2, 2006 | 01:58 PM
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Originally Posted by classicauto
yes it will help - but really you should search this - it has been covered numerous times....

mix about 100:1 ratio, you'll need to disable the metering oil pump and never ever forget to put it in when you fill up

Thanks for the help, sorry I didn't search I am new here and really don't know what the appropriate protocol is.
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Old May 2, 2006 | 01:59 PM
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well, read the FAQ at the top first off - its got more useful info then you can shake a stick at
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Old May 2, 2006 | 02:13 PM
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The only real reason you would have to premix is if you swap an S5 motor into an S4 car with an S4 harness and ECU cause that disables the electric oil metering pump on an S5 (essenitally the car isnt shooting oil into the chamber with gas to lubricate the seals) and thats why you have to premix. Other than that if your OMP is working properly it shouldnt be an issue and dont try to get smogged on a premix tank...
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Old May 2, 2006 | 02:23 PM
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Originally Posted by swbooking
The only real reason you would have to premix is if you swap an S5 motor into an S4 car with an S4 harness and ECU cause that disables the electric oil metering pump on an S5
Thats not the only reason

Premix lubes the apex seals more efficiently than the regular MOP system and is the choice of many high HP 7 owners for that reason
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Old May 2, 2006 | 02:28 PM
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well if hes brand new to 7s then i wouldnt think he is worried about high HP i was telling him based on his situation... but your right, i shouldnt have said "only"
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Old May 2, 2006 | 09:56 PM
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hey do i have to disable the metering oil pump?? also am using synthetic oil and somebody told if i do you have to premix cuz it won't burn is that true???
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Old May 2, 2006 | 10:49 PM
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You do not have to disable the OMP you may want to run 200:1 with the OMP, a quality synthetic is fine.

Castor based oils burn with more ash/ carbon then motor oil so not all premix oils are cleaner burning. Sadly because I like the way castor based oils lube exspanding with heat.
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Old May 3, 2006 | 12:05 AM
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Originally Posted by classicauto
Thats not the only reason

Premix lubes the apex seals more efficiently than the regular MOP system and is the choice of many high HP 7 owners for that reason
Yeah, it improves compression, and i swear it runs smoother too. Its great if your willing to do it. I do it on my GXL cause my omp broke but i'd never go back, after feeling the difference. It will eat your catalytic converter if you still have one, but **** those things anyway.

And just think how cool you'll look at the gas station pouring blue **** through a funnel into you car, out of a bottle with a picture of a lawn mower and a weed whacker on it. Nothing screams performance like that, the ladies think your bad ***.
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