Sept B/S thread
Freshman User
Joined: Aug 2010
Posts: 45
Likes: 0
From: Wallingford
Elder User
Joined: Jul 2007
Posts: 842
Likes: 1
From: Salem, CT
BTW, I put the synthetic Shell Rotella 15W40 in my 7.3 Turbo Diesel twice and 'O' rings started to leak.
pedant
Joined: Jan 2008
Posts: 23,576
Likes: 38
From: EXTREME southwest CT
I think the 5W-40 is synthetic and the 15W-40 is regular.
I'm running the 15W-40 in my gas motor, but I don't have any cats to poison.
Maybe the extra ZDDP makes a difference, it's cheap enough on sale @ Walmart and I can buy a Motorcraft filter there too.
I'm running the 15W-40 in my gas motor, but I don't have any cats to poison.
Maybe the extra ZDDP makes a difference, it's cheap enough on sale @ Walmart and I can buy a Motorcraft filter there too.
Fleet Mechanic
Joined: Jun 2009
Posts: 1,320
Likes: 1
From: CT
Yup the 351 is a gasser. This is just the regular rotella. I don't believe it's synthetic.
It has more zinc than most motor oils these day which is good for my 351w as its not a roller cam or roller cam block. I believe in 92' they went to roller or 94' don't really remember.
The extra zinc helps. My cat only has to last a few more years or about prob 50k miles if even. They should be okay.
I doubt the previous owner ever changed the oil the whole year he owned it. The stuff was black.
It has more zinc than most motor oils these day which is good for my 351w as its not a roller cam or roller cam block. I believe in 92' they went to roller or 94' don't really remember.
The extra zinc helps. My cat only has to last a few more years or about prob 50k miles if even. They should be okay.
I doubt the previous owner ever changed the oil the whole year he owned it. The stuff was black.
Lead Driver
Joined: Jul 2007
Posts: 5,715
Likes: 1
good morning everybody.
i have to build handicap ramps at my parents house and go get the family hospital bed from my grandmothers basement. while i am doing that james will be swapping injectors out of my truck and into his, my truck gets the stock ones. i pulled the chip and guages yesterday.
i have to build handicap ramps at my parents house and go get the family hospital bed from my grandmothers basement. while i am doing that james will be swapping injectors out of my truck and into his, my truck gets the stock ones. i pulled the chip and guages yesterday.
pedant
Joined: Jan 2008
Posts: 23,576
Likes: 38
From: EXTREME southwest CT
Good morning Aaron.
Where do your parents live? I'm stuck dog/house sitting 'till tomorrow but I'd gladly give you a hand.
I hope your father is doing better and wish him a speedy and complete recovery.
Where do your parents live? I'm stuck dog/house sitting 'till tomorrow but I'd gladly give you a hand.
I hope your father is doing better and wish him a speedy and complete recovery.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Top 10 Ford Trucks Coming to Mecum Indy 2026
Brett Foote
5 Best / 5 Worst Ford Truck Wheels of All Time
Joe Kucinski
Lead Driver
Joined: Jul 2007
Posts: 5,715
Likes: 1
thanks guys but we are all set, i have my brother for help. as for doing better, i cant say he is because they told him yesterday he may have broken the knee on his "good" leg. we are pulling him out of stamford and will be going to new haven if he needs any more hospital work done. at stamford we have been hearing a different story from 30 different people every 5 minutes. not to mention the hour drive from home is killing my mother.
Postmaster
Joined: Jul 2009
Posts: 4,753
Likes: 5
From: Middletown, CT
Hey Tanner, with the way you are talking up that oil, I may have to give it a shot. I am going to run some seafoam through just before I change the oil first. Probably in the next couple weeks. I think I need to change the transmission fluid as well.
Fleet Mechanic
Joined: Jun 2009
Posts: 1,320
Likes: 1
From: CT
Josiah, I'm sure your're 300 will love the stuff. Also you can consider adding a zddp additive that will probably give you more than the oil does anyway. Seafoam rocks i need to get some time. Also i've heard of auto rx which does a similar thing as seafoam.