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'99 & up Upgrades and Aftermarket - 7.3L Engine Upgrading or adding OEM or aftermarket equipment to your 1999-Up Super Duty or Excursion with 7.3L Power Stroke diesel engine. Please confine discussion of topics in this forum to those items that are specific to the 7.3L Power Stroke engine.

Thread: Oil for the 7.3L Reply to Thread
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  Topic Review (Newest First)
11-23-2018 11:33 PM
blue99stroker Rotella 5w-40 is around 1100 ppm of each zinc and phos

Delo 5w-40 is around 680 zinc and 750 phos Yikes

Yet delo claims 70% better wear protection.

The ck4 is supposed to have better anti aeration additives
11-23-2018 11:21 PM
ArcticDriver
Quote:
Originally Posted by txgp17 View Post
I was running Rotella T6 5W-40, but that was before CK-4 oils came out. I still had a pretty good stash of CJ-4 oils to work with, but I've only got enough for one more oil change.

I'll steer clear of CK-4 oils. Next time I buy oil, it'll be Schaeffer Supreme 9000™️ Full Synthetic Oil 5W-40, it's still CJ-4, for now. If I'm on the road and need oil, I'll stick with the WSS-M2C171-F1 oils with the Motorcraft logo on the bottle.

For filters, here's what I've found...
The absolute most efficient primary lube oil filter you can get for a 7.3 is the Donaldson DBL7405. (intended for a Caterpillar 3406) It's rated at 7 microns nominal, and 15 microns absolute. But this filter gets dented by my front suspension when it flexes, so I don't run it anymore.

The second most efficient filter I can find is the Donaldson P550371, it's rated at 17 microns absolute.

The third best I can find is the OEM Motorcraft FL-1995, according to Ford's website it's 18 microns absolute.

There's a lot of hype about the Wix 51734XE & Napa 1734XE oil filters, but the published beta ratios are 4 @ 10 microns (absolutely incredible) and 75 @ 30 microns (less than mediocre). I'm inclined to think they've mistyped something because that's a wide range of good-to-bad performance in a single filter.
There was a time I used to know what all that meant.

😉
11-23-2018 11:19 PM
ArcticDriver
Quote:
Originally Posted by blue99stroker View Post
And unfortunately quite a few CK4 oil’s are under 1k of zddp to help cat/DPF life.

Some are still ok.
OK, I know you guys have heard it from me a dozen times already but thats why I bought 40-gallons of the Delvac 5w-40. I had to hit every Murdochs Ranch Supply along the Front Range and Laramie to get every bucket left of the CJ-4 inventories.

I know...probably much ado about nothing 😉
11-23-2018 11:15 PM
ArcticDriver
Quote:
Originally Posted by NYB View Post
At a 20K OCI with a good quality synthetic, I wouldn't be worried about engine wear... I'd be worried about the depletion of the anti aeration additive package and the reduced performance of the oil... not as a lubricant, but as a hydraulic fluid providing the motive power for the injectors... where entrained air from the constantly churning oil would likely reduce the effectiveness of the oil's hydraulic function. Not a concern in a common rail fuel system, but something that International often said is a concern with a HEUI system.
Excellent consideration.
11-23-2018 09:20 PM
txgp17 I was running Rotella T6 5W-40, but that was before CK-4 oils came out. I still had a pretty good stash of CJ-4 oils to work with, but I've only got enough for one more oil change.

I'll steer clear of CK-4 oils. Next time I buy oil, it'll be Schaeffer Supreme 9000™ Full Synthetic Oil 5W-40, it's still CJ-4, for now. If I'm on the road and need oil, I'll stick with the WSS-M2C171-F1 oils with the Motorcraft logo on the bottle.

For filters, here's what I've found...
The absolute most efficient primary lube oil filter you can get for a 7.3 is the Donaldson DBL7405. (intended for a Caterpillar 3406) It's rated at 7 microns nominal, and 15 microns absolute. But this filter gets dented by my front suspension when it flexes, so I don't run it anymore.

The second most efficient filter I can find is the Donaldson P550371, it's rated at 17 microns absolute.

The third best I can find is the OEM Motorcraft FL-1995, according to Ford's website it's 18 microns absolute.

There's a lot of hype about the Wix 51734XE & Napa 1734XE oil filters, but the published beta ratios are 4 @ 10 microns (absolutely incredible) and 75 @ 30 microns (less than mediocre). I'm inclined to think they've mistyped something because that's a wide range of good-to-bad performance in a single filter.
11-23-2018 08:45 PM
blue99stroker And unfortunately quite a few CK4 oil’s are under 1k of zddp to help cat/DPF life.

Some are still ok.
11-23-2018 01:37 PM
NYB At a 20K OCI with a good quality synthetic, I wouldn't be worried about engine wear... I'd be worried about the depletion of the anti aeration additive package and the reduced performance of the oil... not as a lubricant, but as a hydraulic fluid providing the motive power for the injectors... where entrained air from the constantly churning oil would likely reduce the effectiveness of the oil's hydraulic function. Not a concern in a common rail fuel system, but something that International often said is a concern with a HEUI system.
11-23-2018 12:01 AM
ArcticDriver
Quote:
Originally Posted by INFRNL View Post
late to the party but I use chevron delo from walmart, Mobil delvac is also very good and is now cheaper around $10/gal. I used rotella when i first bought my truck in 06 I like chevron/delvac much better. made my engine louder/noisier. won't touch the stuff after.

Big R, tractor supply, etc have sales on mobile delvac where you can get it extremely cheap if you can afford to buy by the pallet. I use baldwin filters but would prefer fleetguard or donaldson...just my opinion
Exactly the same for me.
Started with Rotella T6.
Engine sounded better on DELO 400 LE 5w40:
https://cglapps.chevron.com/msdspds/...&docFormat=PDF

WalMart quit stocking the LE right about the time I switched to DELVAC 5w40 in 5-gallon buckets for $125 minus a $60 rebate which is still active until end of 2018.

The only inconvenience is the 5-gallon pail. Best to use a hand pump or pour into a 4-quart steel oilcan with spout:
11-22-2018 09:58 PM
INFRNL late to the party but I use chevron delo from walmart, Mobil delvac is also very good and is now cheaper around $10/gal. I used rotella when i first bought my truck in 06 I like chevron/delvac much better. made my engine louder/noisier. won't touch the stuff after.

Big R, tractor supply, etc have sales on mobile delvac where you can get it extremely cheap if you can afford to buy by the pallet. I use baldwin filters but would prefer fleetguard or donaldson...just my opinion
09-29-2018 11:50 PM
bcguide I use wallmart 15/40 and change it once or twice a year. Bought the truck with 125000 km and now has 470000
09-13-2018 07:23 AM
79jasper
Quote:
Originally Posted by ArcticDriver View Post
You have found a good price...Lol
"I know a guy." Lol
He'll sell to anyone that wants to call/text him. Same prices as if it were someone else.

Sent from my SAMSUNG-SM-G930A using Tapatalk
09-13-2018 07:21 AM
ArcticDriver
Quote:
Originally Posted by losfinch View Post
Quote:
Originally Posted by ArcticDriver View Post
Do you have any UOAs to post?

Is your motivation cost savings?

IIRC, your driving conditions are “severe” as defined by the Owners Manual?

Thanks
No UOAs to report. I did some a while back and things were fine but anymore I'm just going by what I feel is a good, conservative time and mileage frame for what most people running full synthetic and bypass systems do. Motivation? I was motivated primarily by wanting to cut down on the amount of supplies I had to haul down here (Mexico) to change the oil and filters. One full oil change every 20,000 is a lot less oil and filters than every 5000 as I was doing before. It does come out a little cheaper, too, which is a nice side benefit but not the primary motivation. Also, I like having a high quality oil in the motor and the Mobile One filters have a better filtration rating than the OEM Ford ones IIRC. I also like the cold weather starting ease that comes with the full synthetic oil as well. And, yes, according to the manual my conditions are "severe."
Thanks for the insightful response.
09-13-2018 07:20 AM
ArcticDriver
Quote:
Originally Posted by 79jasper View Post
Quote:
Originally Posted by ArcticDriver View Post
I hope you get this through your employer at some kind of discount.

Its expensive.
Through Employer?..... Lol
It's really no different than any of the other big names.
About $150 for a 5 gallon bucket shipped to my door in 2-3 days.

Sent from my SAMSUNG-SM-G930A using Tapatalk
You have found a good price...Lol
09-12-2018 09:53 AM
losfinch
Quote:
Originally Posted by ArcticDriver View Post
Do you have any UOAs to post?

Is your motivation cost savings?

IIRC, your driving conditions are “severe” as defined by the Owners Manual?

Thanks
No UOAs to report. I did some a while back and things were fine but anymore I'm just going by what I feel is a good, conservative time and mileage frame for what most people running full synthetic and bypass systems do. Motivation? I was motivated primarily by wanting to cut down on the amount of supplies I had to haul down here (Mexico) to change the oil and filters. One full oil change every 20,000 is a lot less oil and filters than every 5000 as I was doing before. It does come out a little cheaper, too, which is a nice side benefit but not the primary motivation. Also, I like having a high quality oil in the motor and the Mobile One filters have a better filtration rating than the OEM Ford ones IIRC. I also like the cold weather starting ease that comes with the full synthetic oil as well. And, yes, according to the manual my conditions are "severe."
09-12-2018 06:26 AM
79jasper
Quote:
Originally Posted by ArcticDriver View Post
I hope you get this through your employer at some kind of discount.

Its expensive.
Through Employer?..... Lol
It's really no different than any of the other big names.
About $150 for a 5 gallon bucket shipped to my door in 2-3 days.

Sent from my SAMSUNG-SM-G930A using Tapatalk
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