Recently i noticed that my car's engine oil is leaking slowly. When i park my car at night, in the morning i am finding 2,3 oil drops near front right wheel. I checked with mechanic, he suggested me to replace front oil seal which will cost me $150. What should i do. Please suggest me a solution.
Replace the front oil seal. first i would clean the engine with purple power (degrease etc.) then look at the engine and make sure the leak is not coming from above like possibly the valve cover gasket or from the oil sending unit. try to tighten the bolts on the valve cover and even the oil pan. you never know, you may get lucky. i don't know where you are but front seals are cheap but the labor on the job is what costs you.
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Your Altima uses a variety of different oils to lubricate various components. Normally, these oils won't leak. But when you do find a leak, you will almost always need to have extensive work done on your Altima to correct the problem. However, before you can replace anything, you need to know what kind of oil it is Check for brown or black oil leaking on the ground or on the side of the engine. This is engine oil. It lubricates critical engine components. A leak means that an engine seal has failed and needs to be replaced
Check for red oil. Red oil is trans fluid. On your Altima, it most likely means that you have a rear main seal on the transmission that has failed. However, any seal on the transmission is possible. Transmission leaks need to be fixed immediately. A transmission can fail catastrophically in 20 minutes of driving if there is insufficient oil in the transmission
Check for amber or brown oil leaking from your trans. This is transmission gear oil found only on the manual version of the Nissan Altima.
I have the same problem with my harrier 3000cc car. We have changed the idling sensor, airflow sensor. air filter, we have had the throttle checked, spark plugs, wiring and nothing works. The smell you are getting could be from your gear box, have it checked out early and if the gear shift is noticeable then you will need a gearbox specialist to open it and change the clutch plates. Good luck.
This is normal and is good. There is a one way valve built in the oil filter so when the engine is shut off this valve will shut and keep the oil in the passages so when the engine is started oil will be pumped in the engine quicker and oil preassure will be built up quicker.