Oil
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New User
Joined: Mar 2016
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Oil
2002 F350 7.3. 26K miles. Been using Kendall Super D 3 15W40 since new. No longer available. Phillips gave me a part number that they say "should work" I know oil companies have removed zinc and other vital lubricants. what can i run in my truck now that is as good or better than Kendall? oil change coming up shortly. info greatly appreciated
Fleet Mechanic
Joined: Apr 2019
Posts: 1,737
Likes: 661
From: South AR
Our 7.3 engines require oil that meets Ford specification WSS-M2C171-F1 lots of good choices out there.
soo. Did you leave out a 0 on the mileage?
I’ve run Rotella T6 the most. Main reason for me is cost and availability. Now that they have a 15 W action I’m sure going to change to that as I have moved south. Unfortunately I have enough 5W to last probably two more years.
soo. Did you leave out a 0 on the mileage?
I’ve run Rotella T6 the most. Main reason for me is cost and availability. Now that they have a 15 W action I’m sure going to change to that as I have moved south. Unfortunately I have enough 5W to last probably two more years.
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New User
Joined: Mar 2016
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thanks for the info. did not leave out a Zero. Truck is used for at the most 3 weeks a year to in the past tow a camping trailer and now haul a camper. has been garaged or covered since new and still looks new inside and out.
FTE Leadership Emeritus
Joined: May 2014
Posts: 27,354
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From: Lake Hartwell, GA
26K... wow...
I have been using Rotella T6 5w40 for almost 7 years, but am on my last stock of T6. I was going to switch to LE8700 after talking to CJFarm and a couple of others, but decided it was not right for me.
I am interested in trying Rotella T6 15w40, but since it is a new formula, it is pricey...
I think I will mail order some Rotella T4 15w40 with a coupon code and free shipping from a parts store and give that a shot. I live in north GA, so the viscosity is not a concern for me. We do travel cross country to the NW of the country every couple of years. Although, if we going during winter we take the Subaru instead of the 7.3L.
I have been using Rotella T6 5w40 for almost 7 years, but am on my last stock of T6. I was going to switch to LE8700 after talking to CJFarm and a couple of others, but decided it was not right for me.
I am interested in trying Rotella T6 15w40, but since it is a new formula, it is pricey...
I think I will mail order some Rotella T4 15w40 with a coupon code and free shipping from a parts store and give that a shot. I live in north GA, so the viscosity is not a concern for me. We do travel cross country to the NW of the country every couple of years. Although, if we going during winter we take the Subaru instead of the 7.3L.
Laughing Gas
Joined: Jan 2009
Posts: 911
Likes: 74
From: Montana
I would like to try the T6 15-40 as well. And the LE was good oil don’t get me wrong but like I said about shipping put the cost outta reach for me
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Hotshot
Joined: Jul 2008
Posts: 12,782
Likes: 2,142
From: N.GA Mountains
I’ve run T4 and other 15w40 diesel oils that meet the ford spec since I bought my truck in 2003.
I’ve also been burning straight vegetable oil in a custom 2-tank conversion since 2006 - 270k miles on the high cholesterol fuel so far.
Because of my ‘atlernative fuel’ choice and I was terrified of screwing up my truck, I did a lot of used oil analysis and had some intense conversations with the UOA lab engineers.
My take away is that no oil does a ‘better’ job of protecting the engine than a quality conventional oil that meets the ford specs. The synthetic oils just protect the engine longer. Opinions on this vary depending on how the koolaid that manufacturers put out affected people. Snake oils have been around almost as long as prostitution...
Since the contamination from my ‘alternative fuel’ is not what diesel oil is designed to handle, I was never interested in extended OCI’s. For my 7.3’s, 5000 mile OCI always yielded excellent UOA’s and at 5000 miles there was no difference in ‘wear’ with popular synthetic options like T6.
Anyone willing to debate this without UOA experience is wasting their time with me. Quoting your sales brochure is not a convincing argument....
I’ve also been burning straight vegetable oil in a custom 2-tank conversion since 2006 - 270k miles on the high cholesterol fuel so far.
Because of my ‘atlernative fuel’ choice and I was terrified of screwing up my truck, I did a lot of used oil analysis and had some intense conversations with the UOA lab engineers.
My take away is that no oil does a ‘better’ job of protecting the engine than a quality conventional oil that meets the ford specs. The synthetic oils just protect the engine longer. Opinions on this vary depending on how the koolaid that manufacturers put out affected people. Snake oils have been around almost as long as prostitution...
Since the contamination from my ‘alternative fuel’ is not what diesel oil is designed to handle, I was never interested in extended OCI’s. For my 7.3’s, 5000 mile OCI always yielded excellent UOA’s and at 5000 miles there was no difference in ‘wear’ with popular synthetic options like T6.
Anyone willing to debate this without UOA experience is wasting their time with me. Quoting your sales brochure is not a convincing argument....
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Junior User
Joined: Mar 2020
Posts: 98
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From: Port Angels, WA
Well guys I know many will laugh...but I have used Super Tech 15-W40 for years and years now...Not one bit of problems with it. That so called "cheap oil" meets all of Ford's Motor Oil Specs and in my opinion and many others is that it is superior to Ford, Rotella, Delo, and others, except maybe rich man's oil Amsoil. Made by Warren Petroleum without all the hype and fancy packaging and is half the price of others. To each his/her own! Also, just to add some more info...I removed the dual mass flywheel junk Ford came out with to tamp down engine spikes with a good quality LUK clutch and throw out bearing with a zf-6 behind that and only used straight mineral oil in the tranny. For over seven years I dragged a 36ft. 5th Wheel behind that set up all over the Pacific Northwest mountain passes as well as back east and never had any problems. Just saying.
FTE Leadership Emeritus
Joined: May 2014
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From: Lake Hartwell, GA
Junior User
Joined: Mar 2020
Posts: 98
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From: Port Angels, WA
That Tractor Supply Oil sounds interesting. There is one just down the road from me. I think I might just check it out and see what it costs.
BTW...What is the benefit of Zinc Content?
BTW...What is the benefit of Zinc Content?
Last edited by pete500; May 8, 2020 at 09:11 PM. Reason: More Info
Logistics Pro
Joined: May 2017
Posts: 3,523
Likes: 483
From: Southern OH
@00t444e , did anything ever come out of your abnormal UOA from several months back?
