Should the Rear Crankshaft Oil Seal of a Corolla Be Replaced if It's Leaking?
2 Answers
The rear crankshaft oil seal of a Corolla should be replaced if it's leaking. More information about the crankcase is as follows: 1. The lower part of the cylinder block where the crankshaft is installed is called the crankcase, which is divided into the upper crankcase and the lower crankcase. The upper crankcase is cast as one piece with the cylinder block, while the lower crankcase is used to store lubricating oil and seal the upper crankcase, hence it is also known as the oil pan. 2. Functions of the crankcase: The crankcase is the most important component in the engine, receiving the force transmitted by the connecting rod and converting it into torque, which is then output through the crankshaft to drive other engine accessories. The crankcase is subjected to the combined effects of centrifugal force from rotating masses, periodically varying gas inertia forces, and reciprocating inertia forces, causing the crankshaft to bear bending and torsional loads. It also prevents engine oil from deteriorating and avoids leaks from the crankshaft oil seal and crankcase gasket.
I just had my Corolla repaired. If the rear crankshaft oil seal is leaking, it absolutely must be replaced! This might seem like a minor issue, but as engine oil slowly leaks out, it can accumulate over time, leading to insufficient lubrication in the engine. Prolonged neglect could cause the crankshaft or bearings to wear out, and repairing it might cost thousands to replace the entire engine. The engine compartment in a Corolla is quite compact, and oil seal aging is common, especially after driving 70,000 to 80,000 kilometers. It's advisable to have it addressed by a professional shop as soon as possible. Replacing the oil seal with new materials costs just a few hundred dollars, and the labor might be higher since the transmission might need to be disassembled, but it's far better than letting it develop into a major problem. Regularly check your parking spot for oil stains and monitor the oil dipstick to prevent issues before they arise.
