I have a question on oil for my brand new 2012 Acura TL SH-AWD. I was reading over the owner's manual and found this interesting tidbit. If the car is equiped with the 3.5L engine it calls for 0W-20 but if it has the 3.7L engine it recommends 5W-20. There is no mention regarding the 3.7L engine that 0W-20 is an acceptable alternative and the oil filler cap lists 5W-20. If the only difference between the oils is the cold temp viscosity, then why would they differentiate between the two engines? I realize they may not have updated the 3.7L engine with low tension rings, etc but I thought it odd that they still recommended the 5W-20 oil. Any thoughts?