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Eneos is a full true synthetic oil and can be easily run for 10,000 miles before a full change i just do the filter swap because i don't believe in high milelage filters.
I usually use the designated Motorcraft, Walmart stocks it. I know there's some debate for which filters are better, but 1st I guess this is good enough for Ford, and 2nd I always change both the oil AND the filter every 3000 miles. Put over a 100,000 miles on each of my last 5 cars, and never had an engine problem. Good maintenance pays off...PS I've always changed my own oil since I started driving, 49 years ago.
I use Amsoil 5W-30 full synthetic and Motorcraft FL820s
My 4.0 Mustang has 115,000 miles with 85,000 running an X-Charger supercharger along with plenty of open track, autocross and daily WOT accelerations.
Wow you've been running 85,000 miles with the X-charger? Thats awesome makes me feel alot better about accelerating hard occasionally since I just passed 40,000. Also you do autocross.
2 weeks ago I switched from the Ford synthetic blend to Mobil 1 10w-30 and I'm using the Ford 820S Filter.
Location: PA to KY ('07) to IL ('09) to MS ('10) to FL ('11)
Posts: 16,182
Using the Motorcraft blend and filter is excellent for 99% of drivers. Just be sure not to exceed 7500 miles. If you're doing a lot of stop and go and city driving, change it by 5,000 miles or so. You can't beat the price for the oil and filter at WallyWorld.