Ok here is my problem, I have put about 1500 miles on my 2000gts, and the oil gauge was always reading 2 notches PAST 40. Well I went canyon carving to see how well the viper would handle in the corners, it handled AWESOME by the way as it should. But now the oil gauge is reading straight up at 40 I checked the oil level and it was low 2 quarts, I put two quarts of recommended oil Mobil 1 and checked oil level and it is dead on. I then took it out for a spin and at idle it is now 1 hash mark past 40 but as cruising speed the pressure goes back up to 2 hash marks past 40 is this normal or do I have a problem. I was thinking of changeing the oil maybe it has lost its thickness I guess. 10.30 is what I am using, since its summer should I use a thicker oil. will this help my oil pressure. thanks for any input