adg44
Enthusiast
This should be fun 
Here are the results from my UOA on M1 10w30 that was used in my Viper for roughly two years, but only 2500 miles. The previous owner figured an extended drain would be OK since the car was not driven very much. The main area that this affected was the TAN (Total Acid Number) , as the TBN (Total Base Number) was still OK (dropped from roughly 10-12 new), but unable to combat the acidity in the oil.
Iron - not bad at all considering the extended drain and that the engine is still breaking in. Lead - slightly high. Chromium/Nickel - signs of varnish. Aluminum - piston wear, high. Zinc/Phosphate - good, shows that this M1 was from when it was still made with Group IV bases and higher. Flash point - bad. Fuel Dilution - high, cause of low flash point.
This wasn't too bad given the extended drain, but also this M1 is from circa-2005 when it was still a full synthetic. The additive package in the Valvoline SynPower should clean up the varnish quite well, and I am going to change the oil in 3,000 miles (6,000 on engine), and sample it and see how it compares to the M1.
- Anthony
Here are the results from my UOA on M1 10w30 that was used in my Viper for roughly two years, but only 2500 miles. The previous owner figured an extended drain would be OK since the car was not driven very much. The main area that this affected was the TAN (Total Acid Number) , as the TBN (Total Base Number) was still OK (dropped from roughly 10-12 new), but unable to combat the acidity in the oil.
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Iron - not bad at all considering the extended drain and that the engine is still breaking in. Lead - slightly high. Chromium/Nickel - signs of varnish. Aluminum - piston wear, high. Zinc/Phosphate - good, shows that this M1 was from when it was still made with Group IV bases and higher. Flash point - bad. Fuel Dilution - high, cause of low flash point.
This wasn't too bad given the extended drain, but also this M1 is from circa-2005 when it was still a full synthetic. The additive package in the Valvoline SynPower should clean up the varnish quite well, and I am going to change the oil in 3,000 miles (6,000 on engine), and sample it and see how it compares to the M1.
- Anthony