Originally Posted by tiger862
Originally Posted by SubieRubyRoo
Originally Posted by tiger862
In 3000 miles the oil lost Viscosity hot and cold and flashpoint was also lowered. The wear looks good but I would have to try a different oil and see if these improved. Fuel dilution is a little high but not above average but that could have effected it but with lots of idle time could be normal.
Why would you try a different oil for a fuel dilution problem? That'd be as useful as trying a different pair of shoes because your pants don't fit.
If you fix the fuel issue from short trips and insufficient time at full operating temp, the viscosity and flashpoint will fall right into line. If OP had gotten TBN measured and it was above 1.0 (as it certainly should be at 3k miles), even the slightly lower flashpoint & viscosity tell you the oil did a fine job protecting the engine even in the face of fuel dilution. I think OP has a keeper car, and has found the oil his engine really likes.
Pennzoil is made from natural gas and in all the UOA shows these trends with fuel dilution. His fuel dilution is in spec as is 1.5 compared to average at 2.0. That is why I say try a different oil and see if these numbers improve. What can it hurt?
Exactly what importance does having fuel dilution have at all here? His wear numbers, which actually matter because they have a direct impact on the life and longevity of the vehicle, are incredibly low. Therefore, since the fuel dilution is not producing any adverse results, it would be irrational for him to change anything that he is doing, because it would produce no benefit.