My wifes 99 accord says 5w-30 on the oil cap, but now it is 5w-20 according to the new standards. I am wondering if the recommendation for 0w-20 is essentially the same thing. (I realize that it was a viscosity change in the accord situation, but I can also use 0w-20 in the accord and it will be fine.) Thanks in advance Our Best Full Synthetic Motor Oil Pennzoil Ultra Platinum™ Full Synthetic Motor Oil. No other synthetic keeps your engine cleaner. 1 Seven out of 10 new vehicles now require synthetic motor oil, 2 and Pennzoil Ultra Platinum™ with PurePlus ® Technology is exceeding standards and breaking barriers in this growing demand for synthetic motor oil.

Has anyone heard of a letter sent by Nissan to their dealers stating that all new Nissan vehicles were being shipped with 0W-20 Syn oil and instructing the dealers to use this instead of the 5W-30 the owners manual specifically calls for? Being in East Texas I'm thinking I'd rather have 5W-30... The difference between 5w-20 and 5w-30 oil is that 5w-30 oil has a higher viscosity at its operating temperature. Viscosity is the term used to describe the thickness of a substance, in this case oil, where a higher number indicates a thicker oil. Oil viscosity varies inversely with temperature. Turbocharged Foresters with the FB engine use 5w-30 oil. Do they have less problems with oil consumption? I'm thinking of switching from 0w-20 to 5w-30 to see if our 2013 2.5i would consume less oil. It doesn't use as much as some folks here but it seems to me that the heavier viscosity oil...