Remember that the 2010 or newer 6.7L Cummins engine will need about 12 quarts of oil. Earlier model trucks might hold slightly less. You should consult your vehicle’s manual for details.
What type of oil does a 6.7 Cummins take?
Q: What weight oil should be used in a 6.7 Cummins engine? Cummins specifically recommends two Valvoline oils for its engines. The 15W-40 oil is for temperatures above 0 degrees Fahrenheit while the 5W-40 is for extremely cold temperatures.
How many gallons of oil does a 6.7 take?
Capacities and Specifications – 6.7L Diesel
| Item |
Capacity |
| Fuel tank (Large) |
65 gal (246 L) (Liquid capacity) |
| Brake Fluid |
Between MIN and MAX on brake fluid reservoir |
| Automatic Transmission Fluid |
16.3 qt (15.4 L)4
|
| Front axle wheel bearing oil (8500 lb axle) |
6–7 fl oz (177–207 ml) |
What is the best oil to run in a 6.7 Cummins?
The best oil you can purchase for a Cummins 6.7 engine is this: Shell Rotella T6 Full Synthetic Diesel engine oil, crafted for extreme temperatures. With a fully synthetic base and advanced additive composition, you get complete protection from deposits, oil breakdown, and sludge buildup.
How much oil does a Cummins 6.7 L take? – Related Questions
How often does a 6.7 Cummins need an oil change?
Straight out of the gate we recommend 6000 km (3700 mile) oil changes if you are running conventional oil 15W/40. This should be a safe interval for city driving, stop and go driving, and idling.
Does Cummins recommend synthetic oil?
Valvoline Premium Blue Extreme Full Synthetic Engine Oil is exclusively endorsed and recommended by Cummins, meeting API CJ-4 specifications, including Cummins CES 20081.
What oil does Cummins recommend for their engines?
Valvoline Premium Blue™ diesel engine oil remains the The Only One™ recommended for all Cummins engines, providing lasting performance and protection.
Is Rotella 15w40 good for diesel engines?
Shell Rotella® T6 15W-40 Full Synthetic Heavy Duty Diesel Engine Oil is designed and formulated to provide improved performance compared to conventional and semi-synthetic Rotella 15W-40 products. It is suitable for virtually all modern low-emission heavy duty engines* and older hard-working diesel engines.
What oil does Cummins use from the factory?
Valvoline Premium Blue Oil
Valvoline’s Premium Blue Engine Oil is endorsed by Cummins and has been tested extensively by Cummins in stationary and EGR on-road engines, including engines powered by diesel, CNG, LNG, as well as engines equipped with DPFs.
Should I use 10w30 or 15w40?
Since 10W-30 is thinner than 15W-40, its film strength can be weaker and it can be more prone to oxidation. Therefore, high quality additives are needed to compensate for those weaknesses in order for 10W-30 to protect as well and last as long as 15W-40.
Is 15W-40 oil good for a 6.7 Powerstroke?
It is particularly recommended for use in Ford vehicles equipped with Power Stroke® Diesel engines, as well as in other diesel engine applications where the manufacturer recommends an oil of this viscosity grade and quality.
Why do diesel engines use 15w40?
It provides superior protection, conforms to the strict requirements of PC-11 engine oil technology and can be used in diesel engines where API CK-4, CJ-4 and below is required.
Why did Cummins switch to 10W30?
The most common reason for the change is the increase in fuel economy by switching to lower viscosity oil. Engine oil’s main job is to protect your trucks’ engines. The combustion cycle creates heat, soot, and acid; all of which the HDEO must mitigate.
Why is the oil in a diesel engine always black?
The soot forms in cooler parts of the combustion chamber until it impinges on the cylinder wall and is scraped into the oil sump courtesy of the pistons leading to a faster blackening of the oil. The particles are so tiny that they are able to escape the oil filter irrespective of how new or good the filter is.
Can you run 15w40 in a 6.7 Cummins?
15W-40 grade oil CAN NOT be used in any 2019 model year or newer 6.7L equipped vehicles due to the new designed valve train of this engine. If this oil is used, it will cause deposits to form in the Hydraulic Valve Lash Adjusters leading to undesirable noise, and/or engine damage.
Why does my truck run better after an oil change?
What Happens to Unchanged Oil. With time, the unchanged oil thickens and degrades, allowing dirt, particulate and acid to ruin key engine components. Build up sludge reduces the oil’s ability to transfer the heat, which increases engine stress. Changing the oil thus makes the car run better and protects the engine.
Does MPG get better after oil change?
Regular oil changes improve your car’s gas mileage. As the fresh oil moves through the engine, the lubrication of the metal parts increases your engine’s performance and helps it run more efficiently with less work so it doesn’t eat up as much gas.
How long should I let my truck cool down before changing oil?
If the vehicle has been driven, open the hood to let air circulate and let the car sit for 20-30 minutes before draining the oil. It is a good idea to wear rubber gloves and have plenty of clean towels handy to quickly remove any oil that spills on your hands.