FTR | OFF-ROAD TIP OF THE DAY - EXTEND Your Differential BREATHER Vent Hose!!

[@fullthrottlerick199]

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[@postwick]

Using the factory valve on the end defeats the purpose of extending it. The factory valve being one way is what causes the problem. When you extend it you should install an open filter on the end.

[@fullthrottlerick199]

Yea we considered that but in Florida the humidity and condensation would lead to water in the line (and housing) if we went to a filtered 2-way breather. In our case, the OEM front differential vent was not water tight so we fixed that real quick.

[@postwick]

@@fullthrottlerick199 which, again, defeats the purpose. The problem that happens is when you submerge the differential it cools quickly causing suction. The the breather valve/vent is one way, this quick suction draws water in through the axle seals.

[@fullthrottlerick199]

@@postwick We’ve been changing our diff fluids for 22 years and have never found our fluids to be milky unless we had a loose or broken vent. Or when we hydrolocked.

[@postwick]

@@fullthrottlerick199 yeah I suspect the breather extensions are more a peace of mind thing for a problem that's pretty rare.

[@fullthrottlerick199]

@@postwick Yes, exactly!