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2nd Gen Ram Tech1994-2001 Rams: This section is for TECHNICAL discussions only, that involve the 1994 through 2001 Rams. For any non-tech discussions, please direct your attention to the "General discussion/NON-tech" sub sections.
I replaced my fuel pump about 1k miles ago. I've since kept the fuel level no lower than a quarter. I was wondering how low I can go before damaging the pump for the long run?
I personally don't think it matters. The fuel splashes around anyway. Plus we are getting into the colder months.The sending unit might be more affected than anything else. Put some MMO in the tank once in a while. More importantly is what brand did you replace with?
Marvel Mystery Oil. And the quality of the pump is directly related to how long it lasts, not the fuel level ,IMO. Mopar,Denso, Delphi are the recommended choices.
The problem with fuel level, as it relates to pumps, is that the pump is cooled by the fuel. So, at lower fuel levels, more of the pump is exposed, and doesn't get cooled as well it would like. You would have to run it at below a quarter tank for quite a while before it actually starts causing a problem though.