#Oil viscosity chart full#

Most Super Duty pickup trucks will fall under the severe duty service category recommend 5W-40 full synthetic engine oil so long as vehicle is operated in ambient temperatures greater than -20° F.

Engine is run on fuels other than ULSD, including all biodiesel blends.

Vehicle hauls cargo at or near it's maximum payload capacity for extended periods of time.

Vehicles performs heavy trailer towing.

Vehicle performs light to medium towing exceeding 1,000 miles between normal oil change intervals.

Vehicle is driven/operated in temperatures below -9° F or above 100° F.

Vehicle is driven off-road or in dusty conditions.

Vehicle makes short trips with frequent stops and/or engine is frequently operated in a manner that prevents it from reaching full operating temperature.

Engine is idled more than 10 minutes within a 60 minute drive period, is operated at low speeds (under 25 mph) for extended periods of time, or is frequently operated stationary.

Viscosity grades required for operation in ambient temperatures less than -20° F not advised in warmer temperatures.Ī vehicle that meets any of the following criteria is categorized under the 'severe duty' service category: SAE 0W-30/0W-40 API CJ-4 meeting WSS-M2C171-F1 specifications SAE 15W-40 API CJ-4 meeting WSS-M2C171-F1 specificationsĪcceptable viscosity for vehicles using biodiesel blends not a substitute for 5W-40 under 'severe' duty service conditions Viscosity grade required for vehicles falling under the 'severe' duty category and vehicles using biodiesel blends

SAE 5W-40 API CJ-4 meeting WSS-M2C171-F1 specifications Viscosity grade for normal driving and usage SAE 10W-30 API CJ-4 meeting WSS-M2C171-F1 specifications

#Oil viscosity chart series#

We highly recommend Amsoil Max Duty Signature series 5W-40 for all applications within its temperature range it meets Ford specifications and provides additional protections against fuel dilution and engine wear while providing superior cold flow characteristics.Ħ.7L Power Stroke Engine Oil Viscosity Chart In summary, all 6.7L Power Stroke diesel owners should be using a motor oil that meets the Ford WSS-M2C171-F1 specification, which supersedes the previous Ford specs and will ensure maximum engine wear protection in addition to exhaust aftertreatment system compatibility. The takeaway here is that Ford WSS-M2C171-F1 spec engine oils meet CK-4 standards, but CK-4 standards do not necessarily meet the Ford WSS specification. For the 2017 - current model year, Ford has required an engine oil that meets WSS-M2C171-F1 specification again, this spec is used synonymously with API CJ-4 in the owners manual. For 2012 to 2016 model years, Ford required an engine oil that met WSS-M2C171-E specifications, but this spec is used synonymously with API CJ-4 in the owners manual.

In testing CK-4 oil formulations, however, Ford Motor Company found that they did not always meet Ford's wear protection criteria and CJ-4 formulations were superior in this category (you can view the memo from Ford here).įor the 2011 model year, Ford required an engine oil that met WSS-M2C171-D specifications, but this spec is used synonymously with API CJ-4 in the owners manual. In 2016, the American Petroleum Institute introduced the API CK-4 specification, which is assumed to exceed the performance characteristics of the CJ-4 spec. This is a low ash formulation with performance characteristics that, amongst other things, provide protections against DPF clogging and minimizes deposits in EGR coolers and valves. When the 6.7L Power Stroke was introduced for the 2011 model year, Ford required an API CJ-4 engine oil. The engine oil requirements for the 6.7L Power Stroke are somewhat confusing, so let's begin with a brief history lesson. Replace if dipstick is kinked, does not enter/exit dipstick tube smoothly, or if becomes damaged.

Reusable examine condition of o-ring seal and replace as necessary, or replace if top of cap begins to deteriorate. Reusable examine threads and o-ring seal, replace as necessary. Ford/Motorcraft lube oil filter is highly recommended, features silicone anti-drainback valve.