Thread: Few questions about engine oil

5w30 wont do any harm at all to the motor.

10w30 is just better for oil pressure in the summer time because its thicker, because theses motors love oil pressure.

5w30 is better in the winter because its a tad thinner to help the motor out when its cold, and will keep the oil pressure the same because it dont heat soak as bad in the freezeing cold, unlike it would on a 100* F day.

The point is that you want that oil to flow as freely and quickly as possible on a cold start. 10w30 is going to be thick below freezing, it's going to be thick at 10 or 20 C. Bob the Oil Guy claims that even at Florida temps 5w30 isnt as free flowing as an ideal oil would be.

Motor Oil 101 - Bob is the Oil Guy
Read read read, then read again, this guy is an expert.

I never use anything besides 5w30, I hate the idea of that first second of a cold start on a winter day when the oil is cold and not flowing properly. I'd use 0w30, but I worry about that being too thin on WOT runs.

Castrol Edge with Titanium is my motor oil of choice, full synthetic and I honestly felt a smoother acceletation and easier start ups.

For all the hype about K&N filters, I used them for years, and my oil always got dark and dirty quick with those, I started using Bosch DistancePlus and my oil stays golden all the way to oil change time now, big difference.

Typical oil change, oil + filter costs me about 45-50 dollars, Im from US