I haven't filled up yet since switching but it does seem a little better on the gauge. I have suspicion that the 6.0 likes a lower 30 weight oil, a 10w30 is recommended by Ford unless heavy towing/hauling. The xd3 is a thick 30 anyway so I'm hoping it is a happy medium. UOA will tell soon.quote:
Originally posted by hone eagle:
quick lude.I also just changed to xd-3 this my second tank and the milage does seem a little better,if you hadn't reported same I would've dismissed it.hoping it cures the romping first few miles on cold mornings.(mine is a 7.3)lets hope it doen't shear to quick.
You'll probably have a good amount of wear after 1,000,000 miles no matter what oil you choose. The wear numbers probably look pretty out of spec, even though they may be very good for that many miles. Maybe they just don't want people to say "Wow, that's way out of spec!" and ignore how many miles are on the engine, so they decided to brag about cleanliness instead.quote:
Originally posted by wulimaster:
I didn't see any micrometer measurements taken to compare specs with new. I wonder why they choose cleanliness over tolerances?
What oil and viscosity were you comparing to, and in what engine? As the temperature gets colder, things should look even better for the XD-3 compared to the 'other' oils.quote:
Originally posted by Quick_lude:
I can definitely report better fuel economy so far, 16.9L from 17.9L, same driving conditions except the weather was a little warmer. We'll see what happens once the temp dips to below 0 Deg C consistantly. Even if I gain 1L/100km in fuel economy by using the 0w30, for me that will equal to a savings of about 8-10L per week or $5.60-7.00 per week since I drive about 800-1000km per week, hence the usage of synthetic is paying for itself. Now I just hope that the oil holds up, my latest analysis I just posted of Castrol RX 15w40 doesn't look so good.