I have a small oil puddle under the car and was curious exactly what the problem is. When I look under the car there is a puddle were the tranny bolts up to the motor and I know that it is probably the rear main seal. I also have oil deposits underneath the back side of the head indicating possibly the head gasket. Now this motor I got out of a 98 at a junk yard and put in my 97 and it only has 62,000 miles on it not bad, but I do think that the head gaskets needs replaced along with the rear main seal, but I would also like to know what else would benefit me by changing any seals and which ones to change and or gaskets to change. Do the oil pressure sending units leak a lot. Well here is what I bought tonight to replace, oil pressure sending unit, rear main, cam seal, valve cover gasket. what else should I buy besides the head gasket to replace for any leakage? Thanks for any help that you will give.

 

while your at it get a new water pump and timing belt set. Change it all out while you have it all apart. Save yourself having to do it in another 20 or 30k miles. ( i know thats alot, but if your like me you just hate doing it) Change the spark plug tube seals also.

 

get an intake manifold gasket too....since it makes it easy removing the intake manifold for extra clearance....which im about positive that once you take it off...the old gasket is gonna be no good

make sure the timing belt set has the timing belt and tensioner pulley....some sets dont come with the pulley