Apr 2, 2020 · I got my oil changed at a Ford dealership in North Texas yesterday and it turns out they use Synthetic Blend 15W40 for all diesels including the 6.7. I know the Motorcraft 15w40 falls under …

Apr 17, 2017 · I had a 6.4 before the 6.7 and i always ran the 15w 40 rotella oil but it seems like everyone runs the synthetic in the new motor. Will it hurt anything to run the 15w 40 or do you have …

Dec 17, 2022 · 15W40 is the foundation of diesel motor oils. Is it required anymore? No. Is it still practical in A LOT of applications? Yes. My next oil change I'm going to 15w40 synthetic from 10w30 …

Nov 30, 2008 · Hey guys, got a quick question. Ive heard that lucas oil stabilizer is a great additive to use in diesel engines. I purchased an 06 6.0 that has 100,000 miles on it and am curious to know if …

Feb 1, 2017 · I have been running rotella 15-40 T (cj4) but this stuff is getting hard to find. Seems that rotella 15-40 T4 is the newer version. I'm hesitant to run this as ford put out a statement last …

Mar 21, 2023 · 10w-30 vs 15w-40 oil Jump to Latest 14K views 13 replies 10 participants last post by greenskeeper Mar 24, 2023 95obslongbed Discussion starter

Jul 18, 2019 · I to was using to much oil in between oil changes with T6 5w-40 so I went back to the old reliable Rotella 15-40 and problem solved. Just to be fair thou it did start easier in cold weather with …

Jun 9, 2017 · I am getting ready to do the first oil change on my 02' 7.3L. The truck has 93k miles and I want to know what oil and oil filter I should use? This is my first oil change on a diesel. Is there …

Sep 5, 2020 · Maybe I've never noticed it, but went to change oil in 2020 F250 6.7 and the oil cap rec is 10w-30 or 5w-40. I've always used 15w-40 in every F2/350 I have had since 2011. Did this rec for oil …

Oct 10, 2013 · I've been thinking lately about switching to a full synthetic oil from regular oil. I currently run Motorcraft 15W-40 and Rev-X every oil change. Would it be more beneficial to run full synthetic …