This is the second time I have run G-Oil in the Burb and the first UOA I have run on it and I like what I see. This is the non-Flex Fuel 5.3L V8 and the interval was following the OLM. I ran a Napa Gold 1522 oil filter. The air filter is a Fram ToughGuard (oiled cellulose) with about 23k miles on it and the restriction gauge has not budged in that time. The vehicle is a kid hauler and driving is probably 80/20 highway/city (with the freeway onramp only 1 mile from my front door) with a good 30 minute/30 mile run at least once every two weeks. No unusual stress placed on the engine during this 4.5 month OCI. The terrain around here is pretty flat and the climate is temperate, but my neighborhood is pretty windy and dusty with fairly fine dust, which may be contributing to the slightly higher than average silicon number. The engine has not been opened up in some time and she runs like a champ. The only question I have with the numbers in the report is the high calcium. Other UOAs using the same oil show calcium in the 2,000 to 3,400 ppm range. What's going on here? Lab error?
The oil is G-Oil "Bio-Based Advanced Full Synthetic" that I picked up on clearance at Wal-Mart for an average of about $2.25/qt. I think I will take Blackstone's advice and run the current fill for 6,000 miles, which will take right around 6 months to accumulate, and get another UOA. I have another 28 quarts on the shelf, which means I am set for oil for the Burb for the next 2.5 years.
I forgot to catch the sample while draining the sump so I popped a hole in the oil filter before removing it and caught a sample from that stream, hence the "sampling technique" comment.
The oil is G-Oil "Bio-Based Advanced Full Synthetic" that I picked up on clearance at Wal-Mart for an average of about $2.25/qt. I think I will take Blackstone's advice and run the current fill for 6,000 miles, which will take right around 6 months to accumulate, and get another UOA. I have another 28 quarts on the shelf, which means I am set for oil for the Burb for the next 2.5 years.
I forgot to catch the sample while draining the sump so I popped a hole in the oil filter before removing it and caught a sample from that stream, hence the "sampling technique" comment.