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I just premixed with Castrol 10w-30 synthetic blend

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I just premixed with Castrol 10w-30 synthetic blend

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Old 09-13-2018, 12:12 PM
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I just premixed with Castrol 10w-30 synthetic blend



I filled this water bottle with one third oil and two thirds gas, shook, and it immediately became homogenous. So far no problems. Has anyone tried this?
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Old 09-13-2018, 12:48 PM
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Your fuel injectors might act funny with engine oil in fuel.

Besides, what does premixing with 4-stroke achieve? The oil injectors are already doing that. 2-stroke premix helps because it's designed to be burnt cleanly, and even then, no one has concrete evidence that it helps.
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Old 09-13-2018, 12:59 PM
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Yeah, premixing 4-stroke is generally a bad idea. Don't let the car sit for long, you want to keep it mixed in the gasoline while you burn through it, and not slowly separate until you hit a point where the fuel system only sees oil instead of gasoline. Fuel pump, fuel filter, fuel injectors... not to mention injecting straight oil if it gets that far.

I'm confident saying that 2-stroke is proven to work. The primary reason i say this is how the Grand Am RX-8s, prior to that the Grand Am RX-7s, and the entire Star Mazda / Formula Mazda series all premixed their fuel. I had a discussion with Speedsource crew about it briefly at Lime Rock in 2010(?) when I filled in on their over-the-wall crew on the #69. The other teams could all just fill up from the fuel provided at the track, but the RX-8s all had to bring in fuel with them, premixed with oil.

They couldn't run un-premixed without engine failure, and they definitely would have preferred to NOT go through all the hassle and cost of premixing and hauling fuel around for every race.

Last edited by RIWWP; 09-13-2018 at 04:22 PM.
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Old 09-13-2018, 04:13 PM
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Originally Posted by RIWWP View Post
I'm confident saying that 2-stroke is proven to work. The primary reason i say this is how the Grand Am RX-8s, prior to that the Grand Am RX-7s, and the entire Star Mazda / Formula Mazda series all premixed their fuel. I had a discussion with Speedsource crew about it briefly at Lime Rock in 2010(?) when I filled in on their over-the-wall crew on the #69. The other teams could all just fill up from the fuel provided at the track, but the RX-8s all had to bring in fuel with them, premixed with oil.
.
Do you know what ratio they were using with success? Right now I'm pre-mixing 0.25oz per Gallon of fuel, granted I also still run the OMP (stock calibration) with a SOHN adapter.
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Old 09-13-2018, 04:23 PM
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No, I do not know what ratio.
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Old 09-13-2018, 04:33 PM
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Did speedsource and the star mazda cars retain their omps though?
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Old 09-13-2018, 04:47 PM
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I don't recall any confirmation that they did not keep the OMP off hand (it's been several years), however I do not believe that they did, and I think the general consensus was that they didn't.
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Old 09-13-2018, 04:55 PM
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did i make it in before ops next threads "help my car is running funny" then "why wont my car start" followed by "rx8s are pos so heres my partout" lol
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Old 09-13-2018, 05:10 PM
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The few pictures I've seen of STAR engines, they didn't have OMP lines, but I've only seen two images of those engines, and they were in-car.

Originally Posted by 200.mph View Post
did i make it in before ops next threads "help my car is running funny" then "why wont my car start" followed by "rx8s are pos so heres my partout" lol
History is doomed to repeat itself.
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Old 09-13-2018, 05:23 PM
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Originally Posted by Kamal El View Post

I filled this water bottle with one third oil and two thirds gas, shook, and it immediately became homogenous. So far no problems. Has anyone tried this?

(Somebody had to since 9k is AWOL.)
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Old 09-13-2018, 05:35 PM
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No, not really. No one had to.
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Old 09-13-2018, 06:00 PM
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We were all thinking it. I was just the one brave enough to pick up the slack.
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Old 09-13-2018, 08:53 PM
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Originally Posted by furansu View Post
Do you know what ratio they were using with success? Right now I'm pre-mixing 0.25oz per Gallon of fuel, granted I also still run the OMP (stock calibration) with a SOHN adapter.
I run 0.5 oz per gallon(or about 4mL per litre). I don't(and can't) have SOHN, though, so take that with a grain of salt.

Originally Posted by NotAPreppie View Post

(Somebody had to since 9k is AWOL.)
Conspiracy theory time: NAP is 9k all along.

Originally Posted by RIWWP View Post
Yeah, premixing 4-stroke is generally a bad idea. Don't let the car sit for long, you want to keep it mixed in the gasoline while you burn through it, and not slowly separate until you hit a point where the fuel system only sees oil instead of gasoline. Fuel pump, fuel filter, fuel injectors... not to mention injecting straight oil if it gets that far.

I'm confident saying that 2-stroke is proven to work. The primary reason i say this is how the Grand Am RX-8s, prior to that the Grand Am RX-7s, and the entire Star Mazda / Formula Mazda series all premixed their fuel. I had a discussion with Speedsource crew about it briefly at Lime Rock in 2010(?) when I filled in on their over-the-wall crew on the #69. The other teams could all just fill up from the fuel provided at the track, but the RX-8s all had to bring in fuel with them, premixed with oil.

They couldn't run un-premixed without engine failure, and they definitely would have preferred to NOT go through all the hassle and cost of premixing and hauling fuel around for every race.
I also think that 2-stroke oil helps, but there isn't a test done in a controlled environment.
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Old 09-13-2018, 09:00 PM
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Yup, nothing available at least, so still guesses, even if probably correct ones.
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Old 09-14-2018, 07:25 AM
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Originally Posted by UnknownJinX View Post
Conspiracy theory time: NAP is 9k all along.
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Old 09-14-2018, 08:27 AM
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Thumbs down

Originally Posted by 200.mph View Post
did i make it in before ops next threads "help my car is running funny" then "why wont my car start" followed by "rx8s are pos so heres my partout" lol
Im thanking everyone but you.
..l., You
I bought this car knowing what I was getting into. I took this car apart and troubleshot all the way from the maf to the omp nozzles. Then took out my renessis with a 2x4 and a rope, helped rebuild it then put it back in. I fixed almost every system in the car to some degree. And I didnt pay a ******* soul except for the rebuild. And I'm no mechanic. With the way i drive all that oil will be out of my tank today.
******* troll
..l., you

I do get your humor but im not that ***** who quits and blames others

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Old 09-14-2018, 08:30 AM
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Originally Posted by NotAPreppie View Post

(Somebody had to since 9k is AWOL.)
I didnt see 9k's response lol
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Old 09-14-2018, 08:40 AM
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Originally Posted by RIWWP View Post
Yeah, premixing 4-stroke is generally a bad idea. Don't let the car sit for long, you want to keep it mixed in the gasoline while you burn through it, and not slowly separate until you hit a point where the fuel system only sees oil instead of gasoline. Fuel pump, fuel filter, fuel injectors... not to mention injecting straight oil if it gets that far.
.
today is friday
the tank will be done before midnight.
I used to have injector and filter problems but used gummout complete fuels system cleaner and b12. Never had those issues again. oh i got my injectors cleaned at the rebuild too.
I used the castrol because there was no 2 stoke available that was jaso fc, only tw 3c or whatever. Actually the engine oil was recommended by the engine builder. Anyhow it looks like I will have to special order premix by the gallon. jaso fc is hard to find on a shelf around here
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Old 09-14-2018, 08:40 AM
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Old 09-14-2018, 09:17 AM
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Originally Posted by Kamal El View Post
jaso fc is hard to find on a shelf around here
Yup, usually is.
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Old 09-14-2018, 10:34 AM
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You could just buy a case of Idemitsu then, or order something else of your choice in bulk.

I buy a case of 12 quarts and it lasts me a year. This is with me daily driving my car.
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Old 09-14-2018, 11:31 AM
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http://a.co/d/dVl0hsT

http://a.co/d/8UsPsXW

Both: API TC, JASO FC & FD, API EGD

JASO FC = ISO EGC
JASO FD = ISO EGD

https://www.motor-talk.de/forum/akti...hmentId=683876

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Old 09-14-2018, 10:53 PM
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Originally Posted by UnknownJinX View Post
You could just buy a case of Idemitsu then, or order something else of your choice in bulk.

I buy a case of 12 quarts and it lasts me a year. This is with me daily driving my car.
Same here. I buy a case from Mazdatrix once a year.
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