Main Seal Archives - UnderhoodService
Rear Main Seal Diagnostics Q&A

Solving why the seal failed in the first place is critical to preventing a labor-intensive comeback. Here are six questions you should be asking yourself before, during and after a rear main seal job.

PTFE Seal
Bar’s Leaks Offers Concentrated Rear Main Seal Repair

Typically when a vehicle has an oil-soaked starter, the problem is a slow oil leak in the engine’s rear main seal. Unfortunately, this is a common cumulative effect of heat, age and mileage in older cars and trucks.