Heavy-Duty Diesel
Schaeffer’s heavy-duty diesel engine oils give you premium advanced performance.
These heavy-duty diesel engine oils are formulated to provide maximum protection against:
- wear
- oxidation
- sludge
- soot contamination
- and aeration.
Schaeffer's engine oils will provide excellent equipment durability and longevity even during harsh and extreme duty operating conditions. Schaeffer’s own proprietary friction modifiers, Micron Moly® and Penetro® are added to these engine oils. They will create a slippery, tenacious shield that prevents metal-to-metal contact.
You can expect up to 5% fuel savings! Schaeffer’s engine oils are routinely tested each year at independent labs and the results consistently show real savings to your bottom line.
Her are some reviews from real customers:
"Fast shipping, good communication - and the best oil! Schaeffer’s is the best oil, I won’t put anything else in my powerstroke." Dan K.
"The only oil I use. Had a friend who was in the chemistry end of the oil business and recommended Schaeffer oil along with a couple of others. I went with the Schaeffer oil first off and I’m pleased with the results in my 2017 Ram 2500 diesel. Running 20,000 miles with a Donaldson filter with no oil added during that time. I’ll be going with the molly additive next oil change as well." Dale B.
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Schaeffer 9020-012 Advanced Light Duty Diesel Performance 0W-20 (12-Quarts)
Schaeffer Mfg Co.
$288.64Save 10% when you buy 4! Schaeffer's 9020 Advanced Light Duty Diesel Performance 0W-20 (12-Quarts) is a premium quality full synthetic, multi-grade engine oil that is specifically formulated and suitable for use in vehicles that require...$288.64 -
Schaeffer 9020-005 Advanced Light Duty Diesel Performance 0W-20 (5-Gallons)
Schaeffer Mfg Co.
$396.69Save 10% when you buy 3! Schaeffer's 9020 Advanced Light Duty Diesel Performance 0W-20 (5-Gallons) is a premium quality full synthetic, multi-grade engine oil that is specifically formulated and suitable for use in vehicles that require...$396.69 -
Schaeffer 671 Supreme DD Diesel Oil SAE 40 (5-Gallons)
Schaeffer Mfg Co.
$331.29NEW ITEM Save 10% when you buy 4! Schaeffer's 671-005 Supreme 2-Stroke DD Diesel Oil SAE 40 (5-Gallons) is a super high-performance, para-synthetic, monograde, diesel engine oil for use in 2-stroke and 4-stroke diesel engines. Supreme 2-Stroke DD...$331.29 -
Schaeffer 700CK4-003 SynShield Durability Advantage 15W-40 (2x2.5 Gallons)
Schaeffer Mfg Co.
$326.77NEW SIZE PACKAGING (Image shown is 1 gallon-not the actual 2.5 gallon container) Save 10% when you buy 4! Schaeffer's 700 SynShield® Durability Advantage Diesel Engine Oil 15W-40 (2x2.5 Gallons) provides excellent equipment durability and...$326.77 -
Schaeffer's 108 Break-In Oil SAE 30 (5-Gallons)
Schaeffer Mfg Co.
$307.81Save 10% when you buy 4! Schaeffer's 108 Break-In Oil SAE 30 is a fully formulated, balanced, high zinc engine oil. This Break-In oil contains 1650-2250ppm of Zinc and 1650-2250ppm of Phosphorus. It is designed to provide excellent wear control to...$307.81 -
Schaeffer 9000CK4-012 SynShield OTR Plus Full Synthetic 5W-40 (12-Quarts)
Schaeffer Mfg Co.
$249.30Schaeffer's 9000 SynShield® OTR Plus Full Synthetic CK-4 5W-40 (12-Quarts) is specially formulated to provide maximum protection against wear, oxidation, deposit formation, soot contamination and aeration. SynShield™ OTR Plus SAE 5W-40...$249.30 -
Schaeffer 9000CK4-005 SynShield OTR Plus Full Synthetic 5W-40 (5-Gallons)
Schaeffer Mfg Co.
Now: $361.85Was: $382.47Save 10% when you buy 3! Schaeffer's 9000 SynShield® OTR Plus Full Synthetic CK-4 5W-40 (5-Gallons) is specially formulated to provide maximum protection against wear, oxidation, deposit formation, soot contamination and aeration...Now: $361.85Was: $382.47 -
Schaeffer 9000CK4-006 SynShield OTR Plus Full Synthetic 5W-40 (6-Gallons)
Schaeffer Mfg Co.
Now: $403.44Was: $435.27Save 8% when you buy 3! Schaeffer's 9000 SynShield® OTR Plus Full Synthetic CK-4 5W-40 (6-Gallons) is specially formulated to provide maximum protection against wear, oxidation, deposit formation, soot contamination and aeration...Now: $403.44Was: $435.27 -
Schaeffer 6000-006 SynShield® Max MPG 10W-30 FA-4 (6-Gallons)
Schaeffer Mfg Co.
$430.21Save 10% when you buy 3! Schaeffer's 6000 SynShield® Max MPG Diesel Engine Oil SAE10W-30 FA-4 (6-Gallons) is a premium, advanced performance, synthetic plus, heavy-duty diesel engine oil. It is specially formulated to provide maximum...$430.21 -
Schaeffer 723 SynShield Ultra Performance (Synthetic) 5W-30 (5-Gallons)
Schaeffer Mfg Co.
$368.91Save 10% when you buy 3! Schaeffer's 723 SynShield Ultra Performance Full Synthetic SAE 5W-30 CK-4 (5-Gallons) is a premium, advanced performance, heavy-duty diesel engine oil. It is formulated to provide maximum protection...$368.91 -
Schaeffer 722-012 SynShield Ultra Performance 10W-30 (12-Quarts)
Schaeffer Mfg Co.
$232.29Schaeffer's 722 SynShield® Ultra Performance Diesel Engine Oil SAE 10W-30 CK-4 (12-Quarts) is a premium, advanced performance, synthetic plus, heavy-duty engine oil. It is formulated to provide maximum protection against...$232.29 -
Schaeffer 6000-005 SynShield® Max MPG 10W-30 FA-4 (5-Gallons)
Schaeffer Mfg Co.
$381.69Save 10% when you buy 3! Schaeffer's 6000 SynShield® Max MPG Diesel Engine Oil SAE 10W-30 FA-4 (5-Gallons) is a premium, advanced performance, synthetic plus, heavy-duty diesel engine oil. It is specially formulated to provide maximum...$381.69 -
Schaeffer 722-005 SynShield Ultra Performance 10W-30 (5-Gallons)
Schaeffer Mfg Co.
$326.96Save 10% when you buy 4! Schaeffer's 722 SynShield® Ultra Performance Diesel Engine Oil SAE 10W-30 CK-4 (5-Gallons) is a premium, advanced performance, synthetic plus, heavy-duty engine oil. It is formulated to provide...$326.96 -
Schaeffer 700CK4-005 SynShield Durability Advantage 15W-40 (5-Gallons)
Schaeffer Mfg Co.
$326.96Save 10% when you buy 4! Schaeffer's 700 SynShield® Durability Advantage Diesel Engine Oil 15W-40 (5-Gallons) provides excellent equipment durability and longevity even during harsh, extreme duty operating conditions. It is a premium...$326.96 -
Schaeffer 700CK4-006 SynShield Durability Advantage 15W-40 (6-Gallons)
Schaeffer Mfg Co.
Now: $366.49Was: $383.05Save 10% when you buy 3! Schaeffer's 700 SynShield® Durability Advantage Diesel Engine Oil 15W-40 (6-Gallons) provides excellent equipment durability and longevity even during harsh, extreme duty operating conditions. It is a premium...Now: $366.49Was: $383.05 -
Schaeffer 722-006 SynShield Ultra Performance 10W-30 (6-Gallons)
Schaeffer Mfg Co.
Now: $366.64Was: $409.99Save 8% when you buy 3! Schaeffer's 722 SynShield® Ultra Performance Diesel Engine Oil SAE 10W-30 CK-4 (6-Gallons) is a premium, advanced performance, synthetic plus, heavy-duty engine oil. It is formulated to provide...Now: $366.64Was: $409.99 -
Schaeffer 9012-006 SynShield OTR Plus Synthetic 10W-30 (6-Gallons)
Schaeffer Mfg Co.
Now: $409.05Was: $435.69Save 10% when you buy 3! Schaeffer's 9012 SynShield OTR Plus Full Synthetic SAE 10W-30 CK-4 (6-Gallons) is a full synthetic, premium quality, heavy-duty diesel engine oil. It is specially formulated to extend engine life. It...Now: $409.05Was: $435.69 -
Schaeffer 9012-005 SynShield OTR Plus Synthetic 10W-30 (5-Gallons)
Schaeffer Mfg Co.
Now: $364.74Was: $381.69Save 10% when you buy 3! Schaeffer's 9012 SynShield OTR Plus Full Synthetic SAE 10W-30 CK-4 (5-Gallons) is a full synthetic, premium quality, heavy-duty diesel engine oil. It is specially formulated to extend engine life. It...Now: $364.74Was: $381.69 -
Schaeffer 8012 Advanced European Performance HD Diesel 5W-30 (5-Gallons)
Schaeffer Mfg Co.
$408.72Save 10% when you buy 3! Schaeffer's 8012 Advanced European Performance Heavy-Duty Diesel Engine Oil SAE 5W-30 (5-Gallons) offers long-term engine protection for European diesel vehicles. This oil is designed to meet the specific...$408.72 -
Schaeffer 711CK4-006 SynShield OTR Plus 10W-30 (6-Gallons)
Schaeffer Mfg Co.
$367.68Save 10% when you buy 3! Schaeffer’s 711 SynShield® OTR Plus Diesel Engine Oil CK-4 SAE 10W-30 (6-Gallons) is a premium, advanced performance, synthetic plus, heavy-duty oil. It is formulated to provide maximum protection against...$367.68 -
Schaeffer 500 ECO 5000 Diesel 15W-40 CJ-4 (5-Gallons)
Schaeffer Mfg Co.
$331.35Save 10% when you buy 4! Schaeffer's 500 Eco 5000™ Diesel Engine Oil 15W-40 CJ-4 (5-Gallons) is a premium quality, parasynthetic, heavy-duty diesel engine oil. It is formulated with highly re-refined Group II base oils. Eco...$331.35 -
Schaeffer 702-005 Supreme 7000 Synthetic Plus SAE 30 (5-Gallons)
Schaeffer Mfg Co.
Now: $314.65Was: $351.03Save 10% when you buy 4! Schaeffer's 702 Supreme 7000™ Synthetic Plus Engine Oil SAE 30 (5-Gallons) is blended from a combination of polyalphaolefin (PAO) synthetic based fluids and hydro-converted Group II Plus oils. Schaeffer...Now: $314.65Was: $351.03 -
Schaeffer 711CK4-005 SynShield OTR Plus 10W-30 (5-Gallons)
Schaeffer Mfg Co.
$328.10Save 10% when you buy 4! Schaeffer’s 711 SynShield® OTR Plus Diesel Engine Oil CK-4 SAE 10W-30 (5-Gallons) is a premium, advanced performance, synthetic plus, heavy-duty oil. It is formulated to provide maximum protection against...$328.10 -
Schaeffer 700CK4-012 SynShield Durability Advantage 15W-40 (12-Quarts)
Schaeffer Mfg Co.
$231.21Schaeffer's 700 SynShield® Durability Advantage Diesel Engine Oil 15W-40 (12-Quarts) provides excellent equipment durability and longevity even during harsh, extreme duty operating conditions. It is a premium advanced performance,...$231.21 -
Schaeffer 711CK4-012 SynShield OTR Plus 10W-30 (12-Quarts)
Schaeffer Mfg Co.
$231.04Schaeffer’s 711 SynShield® OTR Plus Diesel Engine Oil CK-4 SAE 10W-30 (12-Quarts) is a premium, advanced performance, synthetic plus, heavy-duty oil. It is formulated to provide maximum protection against wear, oxidation, deposit...$231.04