I've been running 10W-30 (factory spec) Mobil 1 in my car ('96 4 cyl. Accord) since new and now have ~210K miles. Unfortunately, by government decree most if not all oil manufacturers have significantly reduced the amount of phosphorus and zinc (both are anti-wear additives) in many of their formulas, the 10W-30 Mobil 1 included.

However, the 10W-40 (and higher viscosities) Mobil 1 supposedly retain the original P and Zn levels. I'll probably give the Honda tech line a call on this, but I was just wondering what the board members think about switching to 10W-40 in my car, at this point.

 

If those additives are that important to you, 10w40 won't hurt. It will be a little thicker at startup but there shouldn't be any problems running it.

 

after that many miles a little bit thicker oil is better for it anyways. There wont be any big problems with it

 

i thought 5w-30 was recommended for 96 accords.

 

it is but the thicker the better if you run it hard