This is a discussion on Use of fuel cap on capless Rams! within the RAM 1500 Diesel General Discussion forums, part of the RAM 1500 EcoDiesel Forum category; Originally Posted by MarkyZ So what are my options for a diesel cap? The factory green plug, Home Depot rubber stopper, or Turner CNC Aluminum ...
I can guarantee that flap valve system our trucks use cost Ram Trucks a boatload more than a fuel cap does! I do agree that the response I got was 100% a CYA one! My truck now has 750 miles on it and I have wiped dirt from the inside of the fuel filler area before both fuel ups so far!
IMO our trucks should have a latched fuel door if Ram Trucks wants to run a capless system! What is the number one thing that can take out a diesel engine? Water and that is why all diesel systems have a WIF warning system (water in fuel) and will even shut the engine down if you do not stop.
I hope I can get an answer with-in the next few weeks (after 1/5/2015) and can report back there is no issue using this cap. I do have one and I am using it and will continue to use it. bottom line, if needed I can run a 1/8" ball end mill down the side, down into the o-ring grove and along the top lip to create a leak path. The other way would be drill a 1/8" hole above the diesel letters about 3/8" in from the small O.D. .
2015 Ram Laramie Crew Cab, short box, 4X4, GDE Tune, western brown with canyon brown light frost beige W/BENCH SEAT, wheel to wheel bars, front windows tinted 15%, 8.4AN radio and more gadgets than I know what to do with!
The F150 has a different design that puts a decent amount of pressure behind keeping the fuel door closed.
I have the aftermarket fuel cap; Ram is just being foolish with the capless setup in my opinion, too much potential for contaminates to get in the tank.
As soon as I come up with something cool, it will go here ->
This is actually amusing.
I would say that Ram's response will always be; "If we don't sell it, we don't recommend it."
15,000 miles with the Aluminum Magnetic Cap and no issues.
Westondan helped set me up with my Green Aluminum cap. Great product...12,000 miles and no issues.
I do not have a cap and have been fine for 15,000. I do not plan on purchasing a cap until someone can actually prove they have fuel contamination from not having one.
Funny thing is some of the same guys that are saying "I don't trust the Ram engineers, what where they thinking " also said "Ram engineered these trucks without a oil catch can and I think they would know what they are doing "
Ram 1500 Crew Cab Big Horn 6'4" bed Maximum Steel metallic, Black/diesel gray interior
3.55 rear end, 17“ wheels, Air Suspension 4-Corner