Many years ago I used Blackstone for several used oil analyses, but that was over 10 years ago.
I'm thinking about making the switch from 0w20 to 5w30 in my Skyactiv Mazda based on recommendations from folks on this forum. However, I'd like to see how the oil is faring with respect to fuel dilution after a long interval (almost 12 months and about 7,000 miles) in order to form an educated opinion.
Is there a preferred vendor for these used oil analysis on my personal cars?
I'm thinking about making the switch from 0w20 to 5w30 in my Skyactiv Mazda based on recommendations from folks on this forum. However, I'd like to see how the oil is faring with respect to fuel dilution after a long interval (almost 12 months and about 7,000 miles) in order to form an educated opinion.
Is there a preferred vendor for these used oil analysis on my personal cars?