Just got the UOA results back for my '97 Grand Prix with 3.8L V-6. I had a recent upper intake manifold coolant leak and was worried that it might have gotten into the oil. I sampled the oil about 400 miles after the intake manifold leak was fixed. The results really arent too terribly bad, but there is a possibility that some coolant was getting into the oil. I would like to see the lead number come down some, but Im at least content at this point that its doing ok. I have been running 6000-7500 mile OCIs with Mobil 1 for the past 45,000 miles. 117,400 miles on the car, 3086 miles on the oil which was Mobil 1 5w-30.
Comments and insight are always welcome. This is my first UOA, but I havent really seen a reason to do one before this. I plan on doing another sample in about 1500 miles on the Chevron Supreme I have in right now to see how things are going. Does anyone know if the possibility exists on this engine for coolant to enter the engine during this repair? or am I looking at problems in the near future with another gasket. Thanks all
- Aluminum 3
Chromium 1
Iron 15
Copper 9
Lead 9
Tin 1
Moly 63
Nickel 1
Manganese 0
Silver 0
Titanium 0
Potasium 27
Boron 112
Silicon 11
Sodium 5
Calcium 2401
Magnesium 18
Phos 762
Zinc 933
Barium 0
Comments and insight are always welcome. This is my first UOA, but I havent really seen a reason to do one before this. I plan on doing another sample in about 1500 miles on the Chevron Supreme I have in right now to see how things are going. Does anyone know if the possibility exists on this engine for coolant to enter the engine during this repair? or am I looking at problems in the near future with another gasket. Thanks all