I am about to do spark plugs and in the process do a quick compression check on my cylinders. Any other things that I should be checking out before I go off the reservation into self-funded repair land?

I spent the whole weekend cleaning out my intake. I've replaced my AOS, plugs, coils and starter just recently. Today I noticed my car running a little rough on the way home from work. Then when I stopped for gas, the oil said it was low. It was down about 2/3rds from where it was yesterday. I...

Owned 16 years 3 owners us spec clean carfax orig blk finnish matching blk sportseats garaged nonsmoker adult owned never tracked all history records brochures tools compressor belts gloves well optioned tasteful mods bilboat xhaust 18 inch Speedlines have orig items 33060 _$175k

I’ve found my 981 and in two days my down payment will be on its way via FedEx to the dealer! I’m buying remotely and a notary will be meeting me at my home to retrieve the necessary documents and the cashiers check. I’ve chosen a 2013 BS black on black beauty, pampered and well optioned - PDK...