SKU: 13366971989

BOSS Lubricants Bulk Diesel Engine Oil CK-4 Full Synthetic & Extreme – 0W-40 · 5W-40 · 15W-40 Synthetic · 10W-30 · 15W-40 Extreme Low Ash EGR DPF SCR On/Off Highway – 205L Drum (Presold Only)

Sale price$408.58 Regular price$453.98
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Description

BOSS Lubricants Bulk Diesel Engine Oil CK-4 Full Synthetic & Extreme – 0W-40 · 5W-40 · 15W-40 Synthetic · 10W-30 · 15W-40 Extreme Low Ash EGR DPF SCR On/Off Highway – 205L Drum (Presold Only)DRUM TOTE CHARGE $50. 00 per Drum $250. 00 per Tote, refundable when returned in original condition Premium Canadian made BOSS API CK 4 heavy duty diesel engine oils choose premium Full Synthetic (true Group III 0W 40, 5W 40, 15W 40) utilizing advanced base stocks for ultimate cold weather flow, fuel economy, thermal stability, and extended drains in extreme Canadian winters, or Extreme (10W 30 fuel economy & proven 15W 40) with Group II+ base oils


DRUM/TOTE CHARGE - $50.00 per Drum/$250.00 per Tote, refundable when returned in original condition

Premium Canadian-made BOSS API CK-4 heavy-duty diesel engine oils – choose premium Full Synthetic (true Group III – 0W-40, 5W-40, 15W-40) utilizing advanced base stocks for ultimate cold-weather flow, fuel economy, thermal stability, and extended drains in extreme Canadian winters, or Extreme (10W-30 fuel-economy & proven 15W-40) with Group II+ base oils for outstanding soot control, wear protection, oxidation/aeration resistance in high-load, high-soot, mixed fleets. Both lines are low-ash formulations engineered to exceed the latest CK-4 requirements (including new oxidation & aeration tests) for 2010+ EGR/EGP / 2017+ GHG engines with DPF/SCR systems while being fully backward compatible with CJ-4/CI-4+ and older specs – perfect for trucking, construction, agriculture, mining, logging, and severe-service diesel engines.

All grades deliver exceptional piston cleanliness, valve train protection, shear stability, TBN retention, and extended drain capability even under severe operating conditions with high soot loading and fuel sulfur levels, while minimizing combustion chamber ash deposits and protecting engine components with high alkaline reserves.

✅ Key Benefits:

  • Exceeds API CK-4 & backward compatible to CJ-4, CI-4+, CI-4, CH-4
  • Outstanding soot thickening control & aeration resistance – passes latest CK-4 tests
  • Superior wear protection for cams, bearings, cylinder liners & valve train
  • Exceptional piston deposit control & engine cleanliness
  • High TBN retention for extended drain intervals & acid neutralization
  • Excellent oxidation, thermal & shear stability – stays in grade longer
  • Low-ash formulation protects DPF, SCR & catalytic converters
  • Outstanding cold-start performance & pumpability (especially low-vis synthetics)
  • Minimizes combustion chamber ash deposits
  • Proudly formulated and bottled in Canada

✅ Grade-Specific Advantages:

  • 0W-40 Full Synthetic → Ultimate arctic cold-start flow (-54°C pour), maximum fuel economy, extended drains in extreme cold fleets
  • 5W-40 Full Synthetic → Superior all-season performance, high VI, maximum protection in severe duty & high temperatures
  • 15W-40 Full Synthetic → Robust high-temperature protection with wide viscosity range, ideal for hot climates and heavy loads
  • 10W-30 Extreme → Fuel-economy optimized for modern GHG engines, lower viscosity, excellent soot handling in mixed fleets
  • 15W-40 Extreme → The #1 heavy-duty workhorse – proven high-soot protection, perfect for mixed fleets & hot climates

Typical Physical Specifications (values are representative of current production):

0W-40 Full Synthetic • Density @ 15.5°C, kg/L: 0.866 • Kinematic Viscosity @ 40°C: 87.27 cSt • Kinematic Viscosity @ 100°C: 15.14 cSt • Viscosity Index: 180 • CCS @ –35°C: 5360 cP • Pour Point: –54°C • Flash Point: 188°C • TBN: 10 • Ash Sulphate, Mass%: 0.99 • HT/HS @ 150°C: 3.55 cP

5W-40 Full Synthetic • Density @ 15.5°C, kg/L: 0.877 • Kinematic Viscosity @ 40°C: 87.75 cSt • Kinematic Viscosity @ 100°C: 14.76 cSt • Viscosity Index: 177 • CCS @ –35°C: 5600 cP • Pour Point: –45°C • Flash Point: 225°C • TBN: 10 • Ash Sulphate, Mass%: 0.99 • HT/HS @ 150°C: 3.85 cP

15W-40 Full Synthetic • Density @ 15.5°C, kg/L: 0.881 • Kinematic Viscosity @ 40°C: 115 cSt • Kinematic Viscosity @ 100°C: 15.05 cSt • Viscosity Index: 146 • CCS @ –20°C: 5800 cP • Pour Point: –43°C • Flash Point: 232°C • TBN: 10 • Ash Sulphate, Mass%: 0.99 • HT/HS @ 150°C: 4.27 cP

10W-30 Extreme • Specific Gravity @ 15.6°C: 0.0865 • Kinematic Viscosity @ 40°C: 81.7 cSt • Kinematic Viscosity @ 100°C: 12.2 cSt • Viscosity Index: 145 • Pour Point: –39°C • Flash Point: 237°C • CCS @ –25°C: 6200 cP • Ash Sulphate, wt%: 1.00 • TBN: 9.1

15W-40 Extreme • Specific Gravity @ 15.6°C: 0.0869 • Kinematic Viscosity @ 40°C: 113.9 cSt • Kinematic Viscosity @ 100°C: 15.6 cSt • Viscosity Index: 145 • Pour Point: –33°C • Flash Point: 226°C • CCS @ –20°C: 5500 cP • Ash Sulphate, wt%: 1.00 • TBN: 9.5

Meets or Exceeds: • API CK-4, CJ-4, CI-4+, CI-4, CH-4 (all grades) • API SN (5W-40, 15W-40 Synthetic) • Cummins CES 20086, 20081, 20087, 20071, 20072, 20076, 20077, 20078 (all grades) • Detroit Diesel DFS 93K222, 93K218, 93K233, 75E 270, 93K215/14 (all grades) • Volvo VDS-4.5, VDS-4, VDS-3, VDS-2 (all grades) • Mack EOS-4.5, EO-O Premium Plus, EO-N PP 03', EO-M (all grades) • Caterpillar ECF-3, ECF-2, ECF-1 (all grades) • Mercedes MB 228.31, 228.3 (all grades) • MAN M3575, 3275 (all grades) • ACEA E7 (all grades) • Ford WSS-M2C171-F1 (all grades) • Renault RLD-4, RLD-3 (all grades) • MTU Category 2.1 (all grades) • JASO DH-2 (all grades) • Global DHD-1 (Synthetic grades) • MIL-L-2104 E/F (Synthetic grades) • Extension sequences in IIIE, VE and L-38 bench test (Synthetic grades) • Daimler MB 228.31 (Extreme grades) • Suitable for virtually all North American, European & Asian on/off-highway diesel engines requiring CK-4 or earlier specifications

Package Size: • 205L steel drum (bulk – presold only) • Drum deposit: $50.00 refundable when returned in original condition (tote deposit $250.00 if applicable)
• Made in Canada
EHC is included in the price

Safety Data Sheet

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 13366971989

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Michelle S.
Lake Worth, US
★★★★★ 5
This is the one!
Color: Gray
I ended up going with another brand, which I returned because it was impossible to insert the batteries into the too-tight compartment (other reviewers had the same issue and I should have listened). So I bought this one and not only is the battery compartment ample size and easy to insert the batteries into, the company even sends you two AA batteries to start you off! I also very much appreciate the fact that you don't have to hold down the button, just push it once to start and push it again to stop. It's powerful and I love that it sits in its own stand and looks nice in my kitchen while doing so.
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Reviewed in the United States on May 29, 2026
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Elaine
Lake Worth, US
★★★★★ 5
Great quality, great price and works great !
Color: Flat Black
Works great ! Quick delivery and great price and I love that it comes with a cover !
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Reviewed in the United States on June 5, 2026
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mnat
San Leandro, US
★★★★★ 5
Good idea great product
Color: Gloss Black
I bought this as a gift. The person loves it. It’s very compact. She puts it in her bag and travels with it. It’s easy because you can charge it at home and then it’s already. She sometimes brings her charger with her so she can use it out.
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Reviewed in the United States on June 1, 2026
L
Verified Purchase
Laura Van
West Palm Beach, US
★★★★★ 5
Works great.
Color: Gloss Black
We preferred this model because the button is on top of the unit, making it easier to use. And we do use it often. The battery lasts for a reasonable amount of time too, and charges quickly on USB.
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Reviewed in the United States on March 26, 2026
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llbonn
Lake Worth, US
★★★★★ 5
Great Product - Stop Wasting Batteries!
Color: Gloss Black
Super happy with this purchase and so glad it's rechargeable. So much better than the fancy brand we had that went through batteries like crazy and had a wobbly shaft. Lots of power and can be easily used for travel as we do for blending protein powder and cream into coffee. It's already traveled to Europe twice, Tahiti, Australia and a Panama cruise and still working like the day we got it. We're very pleased with the quality and the price.
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Reviewed in the United States on May 21, 2026

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