i dont know this answers the best one in the world.
Yes you do.
Depending on where the leak is, if there is a weakness in the 350 it was with the oil cooler lines. It turns out that most of the oil leaks from the cooler lines has nothing to do with seals. It's a problem with the cooler line.
To replace the oil cooler on an N14 engine, first, ensure the engine is cool and disconnect the battery. Drain the engine oil and coolant, then remove any components obstructing access to the oil cooler, such as the intake manifold or exhaust. Disconnect the oil cooler lines and mounting bolts, then carefully remove the old cooler. Install the new oil cooler by reversing the process, ensuring all connections are secure and refill the engine with oil and coolant before starting the engine.
To replace the oil cooler on a 2000 Saturn L Series, start by draining the engine oil and coolant. Remove the necessary components, such as the engine cover and any hoses obstructing access to the oil cooler. Disconnect the oil cooler lines and unbolt the cooler from the engine, then install the new oil cooler in reverse order, ensuring all connections are secure. Finally, refill the engine oil and coolant, and check for leaks before starting the engine.
Buy a new one and install it.
do you remove motor mount to remove oil cooler lines on 2001 chev 2500 hd 4x4
If it is leaking, then best to replace it.
Normally a sign of a coolant leak in the oil cooler. Replace ASAP.
It depens on the size of the oil cooler.
You can buy a replacement cooler line assembly that goes between the oil filter and the radiator. I believe Autozone can get this buy order. Takes about 30min to replace.
If you look at the bottom of the adaptor where the oil filter is you will see 2 bolt heads. I think they are 10mms remove them and pull the adaptor down and replace the gasket / o-ring. You may want to remove the oil filter first. Don't worry about the oil cooler lines, you can pull the adaptor down enough to fix.
To change the oil cooler on a Range Rover P38, first, ensure the vehicle is safely elevated and secure. Drain the engine oil and coolant, then disconnect the oil cooler lines and remove any mounting bolts. Replace the old cooler with the new one, reconnect the lines, and refill the engine with oil and coolant. Always check for leaks after starting the engine and allow it to reach operating temperature.