quote:
Originally posted by sjlee:
There's nothing wrong with using a dino 5W-30 as long as you do regular oil changes. I've had nothing else but that in my Acura... I now have almost 130k without any oil-related problems whatsoever. I've never had to add any additional oil between changes... no leaks or burning. My OCI has been 3750.
Also, you do realize that 5W-30 is thicker than 5W-20 right?
5w-30 dino is fine for Wisconsin and the upper midwest but not for Atlanta and the deep south. A quality 10w-30 dino of Chevron/Havoline, Pennzoil, or Castrol GTX can be run year round in warmer climates.
Yes I realize that 5w-30 is thicker than 5w-20 but it is not as shear stable as the Motorcraft 5w-20 which is made from better basestock oil. The MC 5w-20 is almost a 30 weight oil anyway. 5w-30 requires alot of viscosity improvers and polymers to do the job and most of the time it will shear down to a 5w-20.