I accidentaly premixed with ATF oil. Any advice?
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I accidentaly premixed with ATF oil. Any advice?
Hi all. As the title says I accidentally premixed with ATF oil. I was really tired and in a hurry, my garage was really dark and I poured the ATF oil in my fuel tank.
I poured 100ml (3.3oz) to a half tank of gas.
I know that some people are using this trick for serious flooding situations, and sometimes as a general maintenance item but I also read in Aaron's website (https://www.aaroncake.net/rx-7/atftrick.htm) that it is really bad for our engines. My engine block is almost new (recent rebuild), it has only 30K miles and I don't wanna harm it in any way.
Any advice? Should I add more fuel in the tank in order to dilute the oil some more? Is it ok to leave it like that and continue to drive the car? Should I flush the tank?
I poured 100ml (3.3oz) to a half tank of gas.
I know that some people are using this trick for serious flooding situations, and sometimes as a general maintenance item but I also read in Aaron's website (https://www.aaroncake.net/rx-7/atftrick.htm) that it is really bad for our engines. My engine block is almost new (recent rebuild), it has only 30K miles and I don't wanna harm it in any way.
Any advice? Should I add more fuel in the tank in order to dilute the oil some more? Is it ok to leave it like that and continue to drive the car? Should I flush the tank?
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I would just fill the tank up and premix with the correct oil and maybe add an extra ounce or two.
3 oz isnt very much and being that diluted I cant see it making any deposits in the engine.
3 oz isnt very much and being that diluted I cant see it making any deposits in the engine.
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Thanks guys for all your replies. I talked to another rx owner and said that it will probably not cause any trouble because the quantity was not that much. But I am thinking to just drain the tank. Any other advises are always welcome.
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I keep reading posts about the ATF trick or treatment and the opinions are divided. Many notable users like Rotary Resurrection and others claim that it is not causing any trouble.
https://www.rx7club.com/2nd-generati...-seals-437687/
I am still confused and curious about this subject so if anyone has any experience with ATF, please share it. Thanks.
https://www.rx7club.com/2nd-generati...-seals-437687/
I am still confused and curious about this subject so if anyone has any experience with ATF, please share it. Thanks.
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#8
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For years, owners/dealerships used ATF to get engines running without any problems. The '88 TII we purchased new wouldn't start after sitting in
the garage the first year over the winter, 4,000 miles, so off to the dealership. At that time they had numerous cars not able to start after sitting,
used ATF and no problems that I'm aware of.
the garage the first year over the winter, 4,000 miles, so off to the dealership. At that time they had numerous cars not able to start after sitting,
used ATF and no problems that I'm aware of.
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DR_Knight (10-19-21)
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For years, owners/dealerships used ATF to get engines running without any problems. The '88 TII we purchased new wouldn't start after sitting in
the garage the first year over the winter, 4,000 miles, so off to the dealership. At that time they had numerous cars not able to start after sitting,
used ATF and no problems that I'm aware of.
the garage the first year over the winter, 4,000 miles, so off to the dealership. At that time they had numerous cars not able to start after sitting,
used ATF and no problems that I'm aware of.
#10
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So you had 3oz of ATF in about a 1/2 tank of fuel? Should not be an issue, but just to be safe what I would do is fill the tank with gas and drive the car normally. If you're not running the stock OMP, I'd add the correct amount of proper TCW3 rated pre-mix lube to the tank when you fill up, but otherwise I'd skip the premix for the next few fill-ups. Then top off the tank again when it hits at 3/4 tank, rinse & repeat once or twice more. Each time you do that, you're further diluting that 3oz of ATF to the point of it being completely negligible.
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i would just fill the tank up and keep driving.
1 gallon = 128oz. lets say half tank is 7 gallons, 896 oz. 896/3.5 = 0.003%
1 gallon = 128oz. lets say half tank is 7 gallons, 896 oz. 896/3.5 = 0.003%
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So you had 3oz of ATF in about a 1/2 tank of fuel? Should not be an issue, but just to be safe what I would do is fill the tank with gas and drive the car normally. If you're not running the stock OMP, I'd add the correct amount of proper TCW3 rated pre-mix lube to the tank when you fill up, but otherwise I'd skip the premix for the next few fill-ups. Then top off the tank again when it hits at 3/4 tank, rinse & repeat once or twice more. Each time you do that, you're further diluting that 3oz of ATF to the point of it being completely negligible.
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That's true, but I thought that maybe someone has used it in premix since some people claim that it can lubricate better and remove carbon deposits at the same time. But it seems that the carbon removal properties of ATF are overrated. Even in diesel engines the "after" effects are not that obvious.
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#18
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Just to add to the discussion above about ATF to start an engine, ATF tends to eat many rubbers. I don't know if the oil control o-rings or coolant seals are ATF resistant, but I doubt it.
It's used in piston engines because it soaks down past the rings (which are metal and therefore safe from ATF) into the crankcase, and then gets drained out.
In our case if used for carbon removal it will drain the bottom of the housing, but then below that is a coolant seal groove. Not to mention the oil rings on the rotor front + back faces as well. All of which are rubber.
If you're just pouring it in to build compression for a quick start after sitting a long time, it's probably inconsequential. But you could just as easily use motor oil.
If you're soaking it to dissolve carbon or something, I would advise against that.
As for ATF in the fuel, like I said above it's probably nothing. However fuel is cheap compared to a rebuild kit so I know what I'd do.
It's used in piston engines because it soaks down past the rings (which are metal and therefore safe from ATF) into the crankcase, and then gets drained out.
In our case if used for carbon removal it will drain the bottom of the housing, but then below that is a coolant seal groove. Not to mention the oil rings on the rotor front + back faces as well. All of which are rubber.
If you're just pouring it in to build compression for a quick start after sitting a long time, it's probably inconsequential. But you could just as easily use motor oil.
If you're soaking it to dissolve carbon or something, I would advise against that.
As for ATF in the fuel, like I said above it's probably nothing. However fuel is cheap compared to a rebuild kit so I know what I'd do.
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WANKfactor (10-19-21)
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Just to add to the discussion above about ATF to start an engine, ATF tends to eat many rubbers. I don't know if the oil control o-rings or coolant seals are ATF resistant, but I doubt it.
It's used in piston engines because it soaks down past the rings (which are metal and therefore safe from ATF) into the crankcase, and then gets drained out.
In our case if used for carbon removal it will drain the bottom of the housing, but then below that is a coolant seal groove. Not to mention the oil rings on the rotor front + back faces as well. All of which are rubber.
If you're just pouring it in to build compression for a quick start after sitting a long time, it's probably inconsequential. But you could just as easily use motor oil.
If you're soaking it to dissolve carbon or something, I would advise against that.
As for ATF in the fuel, like I said above it's probably nothing. However fuel is cheap compared to a rebuild kit so I know what I'd do.
It's used in piston engines because it soaks down past the rings (which are metal and therefore safe from ATF) into the crankcase, and then gets drained out.
In our case if used for carbon removal it will drain the bottom of the housing, but then below that is a coolant seal groove. Not to mention the oil rings on the rotor front + back faces as well. All of which are rubber.
If you're just pouring it in to build compression for a quick start after sitting a long time, it's probably inconsequential. But you could just as easily use motor oil.
If you're soaking it to dissolve carbon or something, I would advise against that.
As for ATF in the fuel, like I said above it's probably nothing. However fuel is cheap compared to a rebuild kit so I know what I'd do.
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