2 Different types of Series II lower intake gaskets -which?
Hi guys, having done a trans swap, full exhaust, sway bars, and 4 KYB struts on my LeSabre in the past couple weeks, I figure I'll do the upper and lower manifold gaskets while I'm still on a roll. The car only has 70k miles on it (and a ton of work has been done to keep it going this far!) and it is using coolant and oil. I am losing coolant at a rate of about 1" in the reservoir every 2 weeks. I burn about 1 qt oil for every 1500 miles of driving. Not astronomical fluid usage, but much more than par for a fairly low mileage engine. It seems to reason that degeneration of the gaskets for my plastic intake are the culprit here. Parts stores show 2 different types of lower gasket kits for the Series II -- the "first design", which has rubber end seals ($36 Fel pro kit) and the "second design" which has plastic end seals ($54 Felpro kit). Are these interchangeable, and I can just pick which design lower gasket kit to use, or must I use the exact same type that my car currently has? I have not taken the manifold off yet, so I do not know which type of lower gasket kit I have. If I get to pick and choose, should I go with the second design w/ plastic end seals?