Originally Posted By: Gebo
If I decide to keep my OCI's at 5K, how dumb would I be to purchase the 9003D? It's only about $1/qt more expensive than the 7000. Stupid is as stupid does....
Considering that either oil can carry you safely well past 5000 miles (I just did a 9100 mile interval with the 9000, could have gone further) you are well protected either way.
It's the difference between a synthetic blend and an actual full synthetic oil. If you want synthetic, go with the 9000. If you're ok with a blend then the 7000. But at $1 per quart as you said, it's not much of a difference. Personally, I'd be inclined to go 7500 on the 9000 as a conservative, win-win - you get full synthetic and make up for the extra cost over the 7000.