☎ 1-855-557-9883Wheel seal is leaking oil onto the wheel — can I finish my run first?
A wet hub is a judgment call; a dripping one is not. Gear oil reaching the brake shoes ends that wheel’s braking, and a hub running dry ends with a wheel-off — the failure mode that closes highways. Wheel seals are a routine mobile repair (the mechanic brings the seal, replaces it on-site, refills the hub), so the percentage play is fixing it where you notice it.
Wheel seals fail progressively, which is why drivers gamble on them. The gamble has two bad endings: oil on friction surfaces — DOT out-of-service and genuinely dangerous — or a bearing running low on lube, overheating, and letting the wheel end fail at speed. Neither announces its schedule.
The inspection call: an old stain or light film with a full hub sight glass can wait for scheduled service. Fresh oil tracking down the wheel, wetness you can wipe onto a finger, or a low/empty sight glass means stop. Check the hub temperature by hand near (not on) the hub after driving — one hub hotter than its mates is the classic pre-failure sign.
The roadside job itself is unglamorous and effective: pull the wheel and drum, replace the seal, inspect the bearings while it is open, refill with the right lube, torque to spec. A couple of hours where the truck sits, versus a wheel-end failure’s very different afternoon.