We run all sorts of saws but husky have always been far worse leakers from new than most others for us .
I used to work for Husky and came across this question quite often from many of my dealers/customers. When done using saw for day, loosen the oil cap (to equalize pressure in/out) and then re-tighten for storage. Should eliminate (or darn close to eliminate) any leakage. I do this with my 385XP and it works. When I forget to, it leaks like the Exxon Valdez.
Ok I've had the same bar oil leak since I bought this 455 almost 9 months ago. I lost an entire tank of bar oil over the last 4 months of non use.
I removed the bar, handle, etc. to find on the bottom of the saw. It was leaking from the pickup that plugs into the tank, as previously
described. I cleaned it all up , use the halomar to seal it, and re-filled the tank. So far its has held. I have not run the saw yet, but in
my case this is definitely the leak.
On another note Husqvarna has a support line.. what a joke. Took 5 calls and the person on the other end of the phone could
only direct me to the local repair shop. I happen to know these guys. They have been sending things to other shops that they can't fix.
I'm sure this is the last Husqvarna I will ever own... Obviously soem business capitalist got a hold of this company, and the product quality has gone to (H l).
Good luck with your leaks...
Look at the tag on your 455 and PM me the date and serial number so I can compare against SB. There was a update on 346 455 saws using 2 piece oiler lines I think I read.
If it's the same as the smaller saws like the 136 and 141, they replaced the 2 piece line with a single piece type with a hole for the oil pump to push into instead of the original clamshell design.
I have a Stihl MS361 Pro, Stihl MS 290 Farm Boss, Husqvarna 455 Rancher, and dad has a cheap Craftsman. All of these saws leak bar oil. I think the Stihls don't seem to leak as much but they all do. Only saw I think we ever had that hardly leaked any was a Homelite dad had when I was a kid. As far as releasing the pressue goes with cap. That may work in some areas but around here the temp changes almost everyday drastically around here it seems like which puts pressure back in the tank.