Fuel Filter?
07-23-2008, 07:00 AM
#26
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Well I do apologize, didn't mean to demean Expo in any way. 
It doesn't surprise me considering the many other things that are different on this vehicle from a conventional automobile, I personally had just never heard of replacing the pump for maintenance reasons, but I had always replaced the filters fairly regularly.
Seeing that this is all one piece I can understand why you would change the pump out for maintenance reasons since you can't just change the filter by itself. I guess in short, thanks for the info, I was actually thinking about doing this soon and so I learned something helpful! (New engine as well, 3k miles in the car when I bought it).
It doesn't surprise me considering the many other things that are different on this vehicle from a conventional automobile, I personally had just never heard of replacing the pump for maintenance reasons, but I had always replaced the filters fairly regularly.
Seeing that this is all one piece I can understand why you would change the pump out for maintenance reasons since you can't just change the filter by itself. I guess in short, thanks for the info, I was actually thinking about doing this soon and so I learned something helpful! (New engine as well, 3k miles in the car when I bought it).
07-23-2008, 07:37 AM
#27
Crappy premix that is not designed for fuel injection will clog up the filter in no time flat.
People use a lot of crappy paraffin based pre-mixes that are designed for carbed motorcycles and old snowmobiles and expect that it can fit through the 150mc screen of the filter. It won't and it will clog into a waxy mush when used with some other additives (like many of the so-called fuel cleaners and treatments).
People use a lot of crappy paraffin based pre-mixes that are designed for carbed motorcycles and old snowmobiles and expect that it can fit through the 150mc screen of the filter. It won't and it will clog into a waxy mush when used with some other additives (like many of the so-called fuel cleaners and treatments).
I am thinking the crap on my old fuel filter came from all the junk in the gas. who knows ?
Im happy with my new pump, but I will probably replace it again @ 60 something 70K, just to be sure that my car can run as best as it could.
07-23-2008, 01:56 PM
#28
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Are Idemitsu and Red Line SI-1 crappy ??
I am thinking the crap on my old fuel filter came from all the junk in the gas. who knows ?
Im happy with my new pump, but I will probably replace it again @ 60 something 70K, just to be sure that my car can run as best as it could.
I am thinking the crap on my old fuel filter came from all the junk in the gas. who knows ?
Im happy with my new pump, but I will probably replace it again @ 60 something 70K, just to be sure that my car can run as best as it could.
Good pre-mix is fine. I know Idemitsu is fine, but have not looked at the Redline SI-1 to see what it is based on, but I would guess it is fine too.
Its the crappy stuff that people buy in motor cycle shops for a gallon for $10 that runs into trouble.
And the other issue is mixing pre-mix with other gas additives. For example MMO or Lucas. Those tend to be parafin based and mixed with a pre-mix will clog up pretty fast as they tend to clump, instead of suspend (mostly the Naphthenic Hydrocarbons that both contain- and which is often used in drilling muds) MMO themselves recommends not using more than 25% of the recommended levels when using with Pre-mixes.
Last edited by Icemark; 07-23-2008 at 01:58 PM.
07-23-2008, 02:50 PM
#29
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No, I think you mis-understood.
Good pre-mix is fine. I know Idemitsu is fine, but have not looked at the Redline SI-1 to see what it is based on, but I would guess it is fine too.
Its the crappy stuff that people buy in motor cycle shops for a gallon for $10 that runs into trouble.
And the other issue is mixing pre-mix with other gas additives. For example MMO or Lucas. Those tend to be parafin based and mixed with a pre-mix will clog up pretty fast as they tend to clump, instead of suspend (mostly the Naphthenic Hydrocarbons that both contain- and which is often used in drilling muds) MMO themselves recommends not using more than 25% of the recommended levels when using with Pre-mixes.
Good pre-mix is fine. I know Idemitsu is fine, but have not looked at the Redline SI-1 to see what it is based on, but I would guess it is fine too.
Its the crappy stuff that people buy in motor cycle shops for a gallon for $10 that runs into trouble.
And the other issue is mixing pre-mix with other gas additives. For example MMO or Lucas. Those tend to be parafin based and mixed with a pre-mix will clog up pretty fast as they tend to clump, instead of suspend (mostly the Naphthenic Hydrocarbons that both contain- and which is often used in drilling muds) MMO themselves recommends not using more than 25% of the recommended levels when using with Pre-mixes.
07-23-2008, 04:30 PM
#30
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Next to nothing. (around 0.195312%)... near 1/5 of 1%
or 512 to 1. So it is too little to help or do anything other than make your wallet shrink.
Normally pre-mix is used around 300 (or 250) to one with a functioning MOP or 100 (to 200) to 1 without a functioning MOP on rotary engines.
MMO's own site says if you are premixing not to exceed 25% of the premix with MMO.
So if you were putting in 8 oz of premix per 15 gallon fill up, then you should not add more than 2 oz of MMO per that 8 oz (however they also note, that they have heard of cars running no premix and using all MMO as premix with no ill effects, however based on the composition of MMO; I can not recommend that in anyway shape or form). I am sure that the reason they are saying no more than 25% is due to chemical clumping issues when used with some pre-mixes.
or 512 to 1. So it is too little to help or do anything other than make your wallet shrink.
Normally pre-mix is used around 300 (or 250) to one with a functioning MOP or 100 (to 200) to 1 without a functioning MOP on rotary engines.
MMO's own site says if you are premixing not to exceed 25% of the premix with MMO.
So if you were putting in 8 oz of premix per 15 gallon fill up, then you should not add more than 2 oz of MMO per that 8 oz (however they also note, that they have heard of cars running no premix and using all MMO as premix with no ill effects, however based on the composition of MMO; I can not recommend that in anyway shape or form). I am sure that the reason they are saying no more than 25% is due to chemical clumping issues when used with some pre-mixes.
Last edited by Icemark; 07-23-2008 at 04:36 PM.
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