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💎 Drive smarter, last longer — the Blue Diamond edge.
Hot Shot's Secret Blue Diamond 5W40 CK-4 diesel oil is a premium 100% PAO synthetic formula infused with patented FR3 nanotechnology. It delivers up to 3% improved fuel economy, reduces engine wear by 71% compared to CJ-4 oils, and maintains optimal viscosity across temperatures. Designed for heavy-duty diesel engines, it meets stringent API CK-4 and Ford specifications, ensuring superior oxidation stability, detergency, and extended drain intervals for enhanced engine protection and performance.
| ASIN | B07NDZCSF2 |
| Best Sellers Rank | #129,320 in Automotive ( See Top 100 in Automotive ) #788 in Motor Oils |
| Brand | Hot Shot's Secret |
| Customer Reviews | 4.6 4.6 out of 5 stars (47) |
| Date First Available | February 6, 2019 |
| Item Weight | 7.5 pounds |
| Item model number | BDGALPAO5 |
| Manufacturer | Hot Shot's Secret |
| Manufacturer Part Number | DIAMOND OIL PAO:BDGALPAO5 |
| Model | Hot Shot's Secret Blue Diamond 100 Percent PAO Oil 5W40 CK4 1 Gallon |
| Product Dimensions | 6.5 x 4.75 x 10 inches |
| SAE J300 Viscosity Grade | 5W-40 |
| UPC | 757347530812 |
| Vehicle Service Type | Diesel engine heavy equipment, Diesel engine pickups, Diesel engine semis, Diesel engine tractors |
| Viscosity | 5W-40 |
B**Y
Good oil
Good oil have used this oil for my truck for several years.
D**7
The choice for diesel
I run this stuff in our fleet Ford Transit diesel vans. Oil tests have always been come back great, showing the 5000 mile changes could go longer.
M**E
5w40
Good oil..used it in my 2020 F350 power stroke..fuel mileage did go up will definitely buy it again
N**L
Nice
Good product
G**I
So far, so good!
Very good oil! Used it in my Montero Sport with 4N15 turbodiesel with 90K kilometers, made it run much smoother and more silent and lesser vibration. Added HS FR3 with no compatibility worries. Used Amsoil 5w30 SS before this oil, the engine also ran smooth but it had a caveat that no oil additives should be used. But I put HS FR3 anyway. The cold-start ticking was no longer there; with the Amsoil, there was. We'll see after a few thousand kilometers if the engine smoothness would still be the same as now. But so far, the engine is loving it!
D**S
Love this diesel oil
This is the diesel oil we love. Thanks
H**D
Very nice!
Looks good! Haven't used it yet. Update: Very pleased with this stuff! I've had it in my 2006 Jeep Liberty CRD for close to 2 years now, and I will be using it again!
E**U
You should perform Used Oil Analysis (UOA) - this oil ships from factory with a TBN of only 7.31
See attached to this review my 3 used oil analysis samples (UOA) over 16,283 miles my new 2024 RAM 3500 Cummins 6.7 Standard Output (SO) - a mix of city and highway, with about 30-40% of the miles involving towing an 8,000lb travel trailer. I had both clean baseline and use oil analyzed 4 times for this product. It doesn't even meeting its own minimum Total Base Number (TBN) specs from the factory. The factory promises a TBN of 10, but the clean sample shows it ships with a TBN of only 7.31. I had to use the manufacturer's TBN booster additive to raise the TBN to ~10. Any product which doesn't meet its own manufacturer's specs is suspect. Anyone using this product should be performing used engine oil analysis.
Trustpilot
1 month ago
2 weeks ago