So I left out a bottle of Napa Syn and MS5K (both 5w30) last night. The low was -12ish and it was -10 when I got them from outside.
I was surprised how they performed similarly in my test, in fact, (unscientifically) the MS5K looked thinner and poured slightly more easily. But they both flowed quite well. Take a look!
I was surprised how they performed similarly in my test, in fact, (unscientifically) the MS5K looked thinner and poured slightly more easily. But they both flowed quite well. Take a look!