Mine is a 2001, could they of made the tank bigger?
Boy you wouldnt think so. You know these things are made from like 10 different plants and I wonder if something isnt different....
Some guys are saying they add it all at once and others say they cant, I mean this anit rocket science here, but something must be different. Maybe I will try the dealer tomorrow and see what they say.
I also know according to the service manual there is a sump (crankcase) leveling system in the engine and maybe some of these are adjusted differently.

 

Some people might be using long, skinny funnels that reach farther down into the tank, instead of just inside. This can displace some of the oil, and make it seem like the cooler is filled further than it actually is. Just an idea?

 

Ok,
I called 2 dealers here in the grand rapids area and the first told me to put in 4 quarts, thats right and this was the service dept. The second told me to put in 3 quarts and don't be so fussy about it aint that critical and over filling is not a problem with these.......
I am now totally convinced that these dealers around here have no idea of what the hell they are doing!
I will not take there advice and I even tried tech support at honda and got no where.
How could a company with such a huge market not have any support!!!!
I will never buy honda again!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
All I wanted to know was why this thing doesent take what the hell the manual says it should take. You would not think it was that big of a deal for them to let me know.
I guess I will just have to continue to wonder??????????????????????????

 

Greatone, I feel your pain. I have no dealer support here in PA either. But think of it this way: 400EX's are SOOO reliable that most dealers don't see one on a regular basis! (unlike some other quads I won't mention[img]i/expressions/face-icon-small-wink.gif[/img])

Just dump 2 quarts of oil in the tank and go riding. Not 3, not 4.

2, TWO, DOS.

Also when you're checking the level, DON'T screw the dipstick in. Just drop it in and pull it out for the proper reading.

 

Greatone: Those dealers must be on some powerful drugs. You couldn't fit that much oil in there if you wanted to. I certainly think that this indicts the dealers, but I wouldn't banish Honda because of it. Luckily I have two decent Honda delaers I can go to. Now if I could just find a decent local Polaris dealer...

 

 

No, the tank sizes on all the models are the same (unless aftermarket). I usually empty the tank, pour oil until it is almost over flowing, let it run about 5 minutes, fill it again until it is 1/2 to 3/4 of the way up the dipstick and then take it for a slow ride and check it a final time.

This has always worked for me