5w 40syn
Posting Guru
Joined: Jun 2006
Posts: 2,096
Likes: 0
Don't Cat engines use high pressure oil to operate their injectors?
Posting Guru
Joined: Jun 2006
Posts: 2,096
Likes: 0
I don't know about that but Cat did develop the HEUI system that both Cat and International use/used.
At one point Cat was going to take International to court over the use of the HEUI system without permission and financial compensation.
At one point Cat was going to take International to court over the use of the HEUI system without permission and financial compensation.
Laughing Gas
Joined: Oct 2007
Posts: 990
Likes: 1
From: North Pole Alaska
And if you are going to change every 20,000 miles Rotella T is still better than a DINO oil
my thoughts
Cargo Master
Joined: Mar 2007
Posts: 3,103
Likes: 32
From: AB/BC
here is the stuff i use, i highly recommend this oil its good for all diesel trucks on the road, cj-4 rated and full syn oil not wanna be full syn like group 3 oils are:
web page: Mobil Delvac 1 ESP CJ-4 synthetic 5W-40 engine oil: 4-1gallon case
Mobil Delvac 1 full synthetic 5W-40 diesel engine . Shipped in a case of 4 one gallon containers. Simply the finest diesel engine oil, providing a full 40 weight oil thickness protection and a superior additive package capable of providing oil change intervals of up to 100,000 miles for over the road trucks! You will be amazed with the instantaneous starting with Delvac 1 and its overall performance! If your diesel is EGR valve equipped and/or exhaust particulate filtered, Delvac 1 ESP is your answer for long lasting, trouble free operation! Mineral based diesel oils create an almost resin like substance in as little as 25,000 miles, causing the EGR valve to stick. Delvac 1's 100% "real" synthetic base stock (as opposed to Group III wannabee synthetic base stocks) stands up to the grueling temps, providing trouble free EGR performance! Delvac 1 ESP meets/exceeds API service levels CJ-4, CI-4Plus, CI-4, CH-4, CF-4, SL and SJ.
web page: Mobil Delvac 1 ESP CJ-4 synthetic 5W-40 engine oil: 4-1gallon case
Mobil Delvac 1 full synthetic 5W-40 diesel engine . Shipped in a case of 4 one gallon containers. Simply the finest diesel engine oil, providing a full 40 weight oil thickness protection and a superior additive package capable of providing oil change intervals of up to 100,000 miles for over the road trucks! You will be amazed with the instantaneous starting with Delvac 1 and its overall performance! If your diesel is EGR valve equipped and/or exhaust particulate filtered, Delvac 1 ESP is your answer for long lasting, trouble free operation! Mineral based diesel oils create an almost resin like substance in as little as 25,000 miles, causing the EGR valve to stick. Delvac 1's 100% "real" synthetic base stock (as opposed to Group III wannabee synthetic base stocks) stands up to the grueling temps, providing trouble free EGR performance! Delvac 1 ESP meets/exceeds API service levels CJ-4, CI-4Plus, CI-4, CH-4, CF-4, SL and SJ.
Fleet Owner
Joined: Nov 2003
Posts: 27,918
Likes: 3,636
Just an FYI -
Looking at MSDS sheets, the Mobil Delvac 1 oil still shows a 70%+ content of highly refined petroleum base stock. I have read that there is a minimum percent content of the Group IV(or V) base stock necessary to claim that it is full synthetic. I will try to find the source of the info and the percentage.
Just so folks do not get to excited, the quest for a fulll Group IV or for a Group IV/V blend is really not necessary IMO. The quality of the highly refined petroleum base stock is VERY hitgh quality. Taking your OCI to 10K (or really even past 7.5k) IMO is probably an unwise thing to do from a cost effective perspective.
The Royal Purple sales person claimed that their oil was a Group IV/V blend. I have seen no proof.
The Valvoline Premium Blue Extreme synthetic (blue bottle) comes in 15W-40 and 5W-40. Be sure to get the one you want.
Looking at MSDS sheets, the Mobil Delvac 1 oil still shows a 70%+ content of highly refined petroleum base stock. I have read that there is a minimum percent content of the Group IV(or V) base stock necessary to claim that it is full synthetic. I will try to find the source of the info and the percentage.
Just so folks do not get to excited, the quest for a fulll Group IV or for a Group IV/V blend is really not necessary IMO. The quality of the highly refined petroleum base stock is VERY hitgh quality. Taking your OCI to 10K (or really even past 7.5k) IMO is probably an unwise thing to do from a cost effective perspective.
The Royal Purple sales person claimed that their oil was a Group IV/V blend. I have seen no proof.
The Valvoline Premium Blue Extreme synthetic (blue bottle) comes in 15W-40 and 5W-40. Be sure to get the one you want.
Senior User
Joined: Aug 2007
Posts: 155
Likes: 0
From: Ontario, Canada
I have been using rotella t 15w40 since new no problems I will be switching to 5w40 synthetic rotella next week and installing my by-pass filter and I will be sending out oil samples to see how long I can extend the oil change intervals.
Also something to mention is POWERSTROKEHELP.COM - The Information Source for Ford Power Stroke Diesel Owners he has alot of good information on 6L psd.
Also something to mention is POWERSTROKEHELP.COM - The Information Source for Ford Power Stroke Diesel Owners he has alot of good information on 6L psd.
Senior User
Joined: Jan 2007
Posts: 251
Likes: 0
From: NW suburbs of Chicago
I had some warranty work done on my truck recently, and they ended up changing the oil as well. They changed out the Rotella T syn 5w-40 for Motorcraft 15w-40. I live near Chicago, and we are in for a moderate cold spell with lows maybe -12. I cannot plug my truck in where I park it, so it sits cold all night until I fire it up in the morning. Think the Motorcraft 15w-40 will be fine in there?
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Top 10 Fords at 2026 Carlisle Ford Nationals
Joe Kucinski
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Elder User
Joined: Apr 2006
Posts: 804
Likes: 0
From: Edmonton, AB
Just an FYI -
Looking at MSDS sheets, the Mobil Delvac 1 oil still shows a 70%+ content of highly refined petroleum base stock. I have read that there is a minimum percent content of the Group IV(or V) base stock necessary to claim that it is full synthetic. I will try to find the source of the info and the percentage.
Looking at MSDS sheets, the Mobil Delvac 1 oil still shows a 70%+ content of highly refined petroleum base stock. I have read that there is a minimum percent content of the Group IV(or V) base stock necessary to claim that it is full synthetic. I will try to find the source of the info and the percentage.
Group IV are usually boutique or pricier brand name (Amsoil, Royal P or Mobil)
Only Group V that I know of is Redline.
Things can change though, just what things were.
Got Diesel?
Joined: Jan 2004
Posts: 4,345
Likes: 21
I had some warranty work done on my truck recently, and they ended up changing the oil as well. They changed out the Rotella T syn 5w-40 for Motorcraft 15w-40. I live near Chicago, and we are in for a moderate cold spell with lows maybe -12. I cannot plug my truck in where I park it, so it sits cold all night until I fire it up in the morning. Think the Motorcraft 15w-40 will be fine in there?
Just let it warm up slowly before driving off.
Personally, I would switch back to 5W-40 due to the extremes cold temps right now in Chicago... but that is me.
Good luck,
Elder User
Joined: Jul 2008
Posts: 599
Likes: 0
From: Tucker, GA
I had some warranty work done on my truck recently, and they ended up changing the oil as well. They changed out the Rotella T syn 5w-40 for Motorcraft 15w-40. I live near Chicago, and we are in for a moderate cold spell with lows maybe -12. I cannot plug my truck in where I park it, so it sits cold all night until I fire it up in the morning. Think the Motorcraft 15w-40 will be fine in there?
Elder User
Joined: Jul 2008
Posts: 599
Likes: 0
From: Tucker, GA
I just switched to Rotella T 5W-40 synthetic. It will be in the low teens this Friday so we'll see how it starts. Here's the tech data sheet from Shell's website (not the MSDS):
http://http://www.sopus-staging.com/...ic_TDS_v10.pdf
Shell states on their website "Protection in Extreme Climates - Shell Rotella® T Synthetic is based on free-flowing synthetic base oils that allow reliable pumping on start-up under cold climate conditions yet remain thick enough even under high temperature operation to protect against wear." So how do they define "synthetic base oils?"
I think it's fine for my climate but I did notice the pour point is -36, so that wouldn't cut it for the Alaska crowd in winter.
http://http://www.sopus-staging.com/...ic_TDS_v10.pdf
Shell states on their website "Protection in Extreme Climates - Shell Rotella® T Synthetic is based on free-flowing synthetic base oils that allow reliable pumping on start-up under cold climate conditions yet remain thick enough even under high temperature operation to protect against wear." So how do they define "synthetic base oils?"
I think it's fine for my climate but I did notice the pour point is -36, so that wouldn't cut it for the Alaska crowd in winter.
Logistics Pro
Joined: Feb 2004
Posts: 4,460
Likes: 14
From: The Land Of Time
I was going to switch to Rotella 5w40 Synthetic but this has me thinking...maybe not. I wasnt going to do it for longer change intervals just better cold start protection and an all around good oil for the summer plus its a syntheitc...isnt it? I change the oil 4xs a year wether it needs it or not..again my choice. Rotella is 19.00 for a 4qt. jug here so its well within the price range. Now Mobil 1 Diesel Truck oil is 26.00 and I have yet to find valvoline Premium Blue Synthetic but I am willing to bet it would be within the 26-35 dollar range.
So I guess my question is will the Rotella good for me? or would the mobil 1 or valvoline be better at the cost of possibly 21.00 a gallon more?
Sarge
So I guess my question is will the Rotella good for me? or would the mobil 1 or valvoline be better at the cost of possibly 21.00 a gallon more?
Sarge
Got Diesel?
Joined: Jan 2004
Posts: 4,345
Likes: 21
I was going to switch to Rotella 5w40 Synthetic but this has me thinking...maybe not. I wasnt going to do it for longer change intervals just better cold start protection and an all around good oil for the summer plus its a syntheitc...isnt it? I change the oil 4xs a year wether it needs it or not..again my choice. Rotella is 19.00 for a 4qt. jug here so its well within the price range. Now Mobil 1 Diesel Truck oil is 26.00 and I have yet to find valvoline Premium Blue Synthetic but I am willing to bet it would be within the 26-35 dollar range.
So I guess my question is will the Rotella good for me? or would the mobil 1 or valvoline be better at the cost of possibly 21.00 a gallon more?
Sarge
So I guess my question is will the Rotella good for me? or would the mobil 1 or valvoline be better at the cost of possibly 21.00 a gallon more?
Sarge
1) All oils are 5W-40 synthetic.
2) All are CJ4 rated.
3) Cost is only factor.
Do you wear boxer or briefs... everyone is different and they all do their function well.
Personally, I use Rotella-Syn due to cost and availability at Walmart. For every user that hates Rotella or uses some other brand, I can show you consistent oil analysis reports from Blackstone stating all is well and within limits for a truck with 139,000 miles on it. I do believe the key is using only Racor/Motorcraft oil filters and changing the oil every 5,000 miles... but that is me.
Is Mobil and Valvoline good oil...of course they are... are they better oils... and better for the money... that is a personal decision that no one can naswer for you... only you can answer it for yourself.
Personally, using the cheapest API certifed CJ4 diesel rated motor oil is better than the most expensive 15W-40 dino oil.