We have had the engine recently 1 year rebuilt ( and then redone again-6 months ago, warranty), the first time there was a head gasket leak, and an exhaust manifold leak due to port divider weld issue. Now, a similar problem: If the engine runs on highway for 20-30 minutes of sustained 70 miles an hour, it splashes oil on engine compartment. Compression is low on #2 cylinder (60 lbs vs 150 or so for the balance). Frustrating. I've been reading a lot here: Could it be head was not planed ? Rings are bad ? What should be my next steps here? Help appreciated.