Oil for the 7.3L - Diesel Forum - TheDieselStop.com
'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.

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post #1 of 27 (permalink) Old 07-26-2018, 05:15 PM Thread Starter
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Oil for the 7.3L

Ok you guys have had a diesel longer than me.What oil and filter do you recommend.And what oil and filter to stay away from.
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post #2 of 27 (permalink) Old 07-26-2018, 05:30 PM
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Try to only use the OEM motocraft fiter FL1995. As far as oil I use Rotella T6 full synthetic, but that is just me.

2002 F250 Super Duty Crew Cab 7.3L Lariat 2WD 131,000mi; 4in turbo back custom exhaust, Garrett GTP38R turbo, Riffraff intercooler boots, Dorman Up-Pipes, Ford Severe Duty AIS, 31 row 6.0 transmission cooler, Scangauge II, ISSPRO EV2 Boost-EGT-Trans temp Gauges, DP T-5 Tuner (stock ,60HP tow, Decel, 60HP highway econo, 80HP city econo), Dieselsite coolant filtration, Max Air A/C mod, foglight mod, AIH delete, LED interior, back up camera, hid foglights.


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post #3 of 27 (permalink) Old 07-26-2018, 06:28 PM
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Ford Approved Oils For Diesels:

https://www.fcsdchemicalsandlubrican...SSM2C171F1.pdf

All oils should be WSS-M2C171-F1 compliant. I personally use the Motorcraft brand following the logic that it was good enough to be selected by Ford for use in their diesels.

2011 F350 4x4 XL Crew Cab Dually

2010 Keystone Fuzion 405 Toyhauler

Last edited by badbart; 07-26-2018 at 06:32 PM.
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post #4 of 27 (permalink) Old 07-26-2018, 09:19 PM
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As said above the Motorcraft FL-1995. It can be found at WalMart for $9.90

Rotella T6.
Chevron Delo 400.
Mobil Delvac.

I buy the top two brands at WalMart and the Delvac at Murdochs Ranch Supply in 5-gallon buckets.

Just to name a few.

I prefer full synthetic because they allow for longer Oil Change Intervals (OCI).

Many here seem to hold to 5,000 OCI for full synthetics.
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2002 F-250 4x4 CC SB 7.3 PSD w/4R100. 182,000 miles.
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2002 F-250 4x4 SC LB 7.3 PSD w/ZF-6. 177,000 miles.
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2000 F-250 4x4 SC SB 7.3 PSD w/4R100. 164,000 miles.
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post #5 of 27 (permalink) Old 07-26-2018, 10:21 PM
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I always use rotella 15w-40 with either 1 quart winter or 2 quart summer of lucas oil stabilizer and I would recommend the motocraft filter if you want the best.
post #6 of 27 (permalink) Old 07-26-2018, 10:47 PM
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Yes, it's unanimous. We all use rotella T6 with the Motorcraft filter. So far, at least.

2001 F350 XLT 4X4 crew cab, dual rear wheels, long bed, black, 7.3l turbo diesel, automatic transmission, 4.10, shift on the fly, running boards, sliding rear window, 38 gal fuel tank, Odyssey extreme 65-PC1750T batteries, Michelin LTX-MS2 rear tires, Sumitomo Encounter front tires, Shell Rotella Ultra elc, 11,500 gvwr, 20,000 gcwr, 7500 gvw, completely stock, 114,000 miles when purchased, now has 240,000 miles, repairs so far: two starters, batteries, cps, brakes, tires, alternator, ball joints, locking hub, wheel hub, AC compressor, serpentine belt, power steering pump, driver's side window, ignition switch, o-ring, Spectra premium radiator, water pump, fan clutch, fan blades, thermostat, thermostat housing, tensioner. Stolen twice so far, but recovered both times with major damage.

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post #7 of 27 (permalink) Old 07-26-2018, 11:14 PM
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Valvoline Premium Blue 15w40 since my truck was new. It had its first oil change at the dealer but other than that it has been done in my driveway.

On filters I got a great buy on two cases of Wix and ran them until they were gone, now it is back to the 1995.

96 F250 PS XLT 4X4 long box, 5sp,4.10, manual hubs,pyro+boost guages, Dark Toumaline, add a leaf, Dale's TYMAR, and HX hose, downpipe, coolant filter, Luk clutch
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post #8 of 27 (permalink) Old 07-27-2018, 02:04 AM
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Many 7.3 owners do not recommend using oil additives such as Lucas products.

There have been possible injector related issues in the 7.3 Powerstrokes if I recall correctly.

My own opinion is that it is not necessary to use an oil additive when using a high quality HDEO.

Some guys do say the 6.0 which experiences stiction has shown benefit by adding Archoil but stiction is not common for a 7.3


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2002 F-250 4x4 CC SB 7.3 PSD w/4R100. 182,000 miles.
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2002 F-250 4x4 SC LB 7.3 PSD w/ZF-6. 177,000 miles.
NOS Black CPS. ScanGauge-II. Bilstein 5100. Noco Mod. Michelin Defender LTX 285/75/16.

SOLD:
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2000 F-250 4x4 SC SB 7.3 PSD w/4R100. 164,000 miles.
NOS Black CPS. Rebuilt Fuel bowl w/gold spring, 6.0 Cooler, Walker BTM, Stancor GPR, Michelin LTX M&S2.
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post #9 of 27 (permalink) Old 09-09-2018, 06:10 PM
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Started out using Rotella T, but then switched to Valvoline "Premium Blue" synthetic, 5W-40 (many years ago), and usually only the genuine Motorcraft FL-1995 filters (Wallyworld seems to be the cheapest seller...).
Occasionally I'll use a Wix or NAPA brand filter, but they are always more expensive than the 1995.

Al in SoCal
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post #10 of 27 (permalink) Old 09-12-2018, 12:07 AM
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Monolec....

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1994 F350 7.3 PSD 4X4 ZF5 DUALLY
PHP HYDRA, 6637, 3-4 DP TO STRAIGHT 4 BEHIND THE TIRE, 1.0 EXHAUST HOUSING, DIY D66 TURBO, FUGA E-FUEL, EBPV DELETE. Cooper discoverer AT/3'S.

2010 VW JETTA TDI DSG Kerma tune. Hankook ventus v2 concept 2.


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post #11 of 27 (permalink) Old 09-12-2018, 12:18 AM
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Quote:
Originally Posted by losfinch View Post
Shaeffers Full Synthetic 9000 (5W40), Mobile One Filter on the motor and frame mounted Amzoil bypass filter. At 10,000 I change out the Mobile One filter and top off the oil. Then at 20,000 I do a complete oil change and replace both filters.
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


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2002 F-250 4x4 CC SB 7.3 PSD w/4R100. 182,000 miles.
NOS Black CPS. ScanGauge-II, AIC, Bilstein 5100, Stancor GPR, Marinco Mod, B&W Turnover Ball, Michelin Defender LTX


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2002 F-250 4x4 SC LB 7.3 PSD w/ZF-6. 177,000 miles.
NOS Black CPS. ScanGauge-II. Bilstein 5100. Noco Mod. Michelin Defender LTX 285/75/16.

SOLD:
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2000 F-250 4x4 SC SB 7.3 PSD w/4R100. 164,000 miles.
NOS Black CPS. Rebuilt Fuel bowl w/gold spring, 6.0 Cooler, Walker BTM, Stancor GPR, Michelin LTX M&S2.
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post #12 of 27 (permalink) Old 09-12-2018, 06:20 AM
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Quote:
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Monolec....
I hope you get this through your employer at some kind of discount.

Its expensive.


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2002 F-250 4x4 CC SB 7.3 PSD w/4R100. 182,000 miles.
NOS Black CPS. ScanGauge-II, AIC, Bilstein 5100, Stancor GPR, Marinco Mod, B&W Turnover Ball, Michelin Defender LTX


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2002 F-250 4x4 SC LB 7.3 PSD w/ZF-6. 177,000 miles.
NOS Black CPS. ScanGauge-II. Bilstein 5100. Noco Mod. Michelin Defender LTX 285/75/16.

SOLD:
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2000 F-250 4x4 SC SB 7.3 PSD w/4R100. 164,000 miles.
NOS Black CPS. Rebuilt Fuel bowl w/gold spring, 6.0 Cooler, Walker BTM, Stancor GPR, Michelin LTX M&S2.
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post #13 of 27 (permalink) Old 09-12-2018, 07:26 AM
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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

1994 F350 7.3 PSD 4X4 ZF5 DUALLY
PHP HYDRA, 6637, 3-4 DP TO STRAIGHT 4 BEHIND THE TIRE, 1.0 EXHAUST HOUSING, DIY D66 TURBO, FUGA E-FUEL, EBPV DELETE. Cooper discoverer AT/3'S.

2010 VW JETTA TDI DSG Kerma tune. Hankook ventus v2 concept 2.


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post #14 of 27 (permalink) Old 09-12-2018, 10:53 AM
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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."

Early 99 F350 4X4 CC 7.3 Auto. A.R.E. Topper, bed carpet/bench inserts, Rhino grill guard, AIS w/sleeve, Fuel filler mod, GOS headlight harness, 02-04 Headlights, Rancho HD stabilizer, 06 Telescoping/heated mirrors with C-Btr Mirrors, Hella FF1000, Htr Bypass valve, front receiver hitch, Quadzilla XZT gauges, ITP Pre-pump/In-tank mods, Pioneer P5000UB w/XM radio, 4 Infinity Kappa 682.7cf, Fumoto valve, FIAMM Highway blaster horns, SS HPX, IDM mod, DP F5 (Stock,Drive-thru,60T,80E,120,80E-Mountain,1200), Walker BTM, RR, Dieselsite BRV, BTS Tranny (2nd one :-), 31 row tranny cooler, Bilstein shocks, Amsoil bypass oil filter, Stancor HD Glow Plug Relay, billet thermostat housing, front & rear parking cameras, Aux reverse lights, Heated Seats.

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post #15 of 27 (permalink) Old 09-13-2018, 08:20 AM
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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


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2002 F-250 4x4 CC SB 7.3 PSD w/4R100. 182,000 miles.
NOS Black CPS. ScanGauge-II, AIC, Bilstein 5100, Stancor GPR, Marinco Mod, B&W Turnover Ball, Michelin Defender LTX


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2002 F-250 4x4 SC LB 7.3 PSD w/ZF-6. 177,000 miles.
NOS Black CPS. ScanGauge-II. Bilstein 5100. Noco Mod. Michelin Defender LTX 285/75/16.

SOLD:
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
2000 F-250 4x4 SC SB 7.3 PSD w/4R100. 164,000 miles.
NOS Black CPS. Rebuilt Fuel bowl w/gold spring, 6.0 Cooler, Walker BTM, Stancor GPR, Michelin LTX M&S2.
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