[101Volts]

Yesterday I changed the engine oil to T6 0w40 early. It's thinner at startup and operating temperature than the T6 5w40, so there's some marginal improvement.

I would have changed the gear oil at the same time but I'm going on a trip with the car tomorrow and don't have any limited slip additive which I don't know if I need or not. I decided to leave that for later.

Looking at oil specs, I see not all 0w30s and 5w30s are quite the same as stated on the bottle. Pennzoil Platinum 5w30 is actually thinner at startup and operating temperatures than Mobil 1 0w30, though Mobil 1's 5w30 is thicker than their 0w30. I'm not yet sure what oil I'll use next - P.P 5w30, RLI 5w30, Amsoil 0w30/5w30?

Edit/Update: Didn't feel like bumping the thread but that last oil change and using the Lucas ATF Thickener (leaky transmission) destroyed mileage, since the change I got 18.48. As of this time mid-march I'm draining the oil overnight and replacing it with Pennzoil Platinum 5w30, keeping the filter (It's an Amsoil EaO) and I'm draining it too.