possibley change the valve guide seals
Coolant does break down. Depending on how bad it is and what type of engine it's in it can even become acidic. That's usually in a diesel engine though. It is recommended to change the antifreeze every 50,000 or so. It does keep the water pump and other cooling system seals lubed.
No, only do that if they are leaking, those seals usually good for 250,000 miles or replace at time of engine rebuild.
If you mean automatic transmission, engine oil will ruin the the seals and friction material. Do not drive, change the fluid immediately.
2.5 engine you can only buy a new valve cover from dealer
If the engine is four-cycle, the valve seals may be worn, causing a small amount of oil to seep into the piston cylinder or combustion chamber. If it is two-cycle, the oil/fuel mix may have a little too much oil.
You can purchase a kit at most auto parts stores that includes an air fitting and a compression tool to remove the locks and change the seals.
Transmission seals? front yes, rear no. Engine seals, yes.
very very big job!!!!! dont recommend for the novice or driveway mechanic. if you blew your apex seals then you more than likely ruined your intermediate housing and more than likely blew out all the other seals. you will need new housings apex seals, corner seals, side seals etc. to many to name. look into a new engine, much easier.
Adding 5 quarts of oil to an engine and overfilling it can cause the seals to blow out. This can cause engine failure.
Get a manual on your car from DISCOUNTAUTOREPAIRMANUALS.COM. there are many seals and some have to be done with the engine out.
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