1997 3100 using Amsoil/Royal Purle Synthetic 10w30 using K&N filter since 50,000 Miles
Currently: 146,000 miles
The car has been pretty reliable but now it has a minor oil leak(oil seems clean an no signs of coolant mixture)
I want to move backk to regular oil and maybe a thicker grade to compensate for the leak
What brand and oil grade would you recommend?
Also being an old car I dont know if I want to continue on investing in expensive oil
I will still keep using K&N filter no matter what oil I use.