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It’s coming up on time to swap out the gear lube on my Miata. Manual says to only use Mazda Long Life Gear Oil IS to maintain the original shift feel, however this stuff is hard to find and when you can find it they ask for $35+ per quart. The manual also says 75W-90 GL-4 is acceptable however...

Nothing seems remarkable here to me except for the low-ish flashpoint combined with the supposedly low fuel dilution. Not a lot of highway miles during this run but it wasn’t typically short-tripped either. M1 ESP went back in, but not sure if I’ll stick with it next time. Seems others here...

Second oil change since I bought it. Suspect fuel dilution went up due to an unusual amount of winter driving for a car that I typically store when too cold to drop the top (nearly non-existent winter in the mid-Atlantic this year). Fram ultra was used again this OCI. I don’t track it, but I’m...

Silverado battery was coming up on 7 years old so I swapped it out for an expensive X2 battery this past fall as a preventative measure. This morning it was 8 degrees F when I went to start it and got the dreaded click with no crank. For a battery that was less than 4 months old and rated at...

Plan to keep my drain intervals at 5000 miles, but the factory fill oil (Idemitsu?) had been in the sump for exactly a year since it was manufactured. Also, after the 500 mile break in, I was not shy about letting the fun little motor live in the upper RPM band, so decided to play it safe and...