Ok, I want to play too. (First time poster here.)
Cars are:
99 Chevrolet Camaro Z28: 5.7L V8, 5.5Q running Pennzoil Platinum 5W30
12 Subaru Imprezza: 2.0L opposed-4, 5.3Q running Castrol Edge Titanium 0W20
13 Ford Focus ST: 2.0L Ecoboost I4, 5.7Q running Pennzoil Platinum 5W30
I'm currently...