{"id":126,"date":"2026-05-18T21:10:39","date_gmt":"2026-05-19T01:10:39","guid":{"rendered":"https:\/\/www.worldsbestdieseloil.com\/oil-guide\/2018-ford-f350-6-7l-diesel-maintenance-guide\/"},"modified":"2026-05-19T00:25:21","modified_gmt":"2026-05-19T04:25:21","slug":"2018-ford-f350-6-7l-diesel-oil-maintenance-guide","status":"publish","type":"post","link":"https:\/\/www.worldsbestdieseloil.com\/oil-guide\/2018-ford-f350-6-7l-diesel-oil-maintenance-guide\/","title":{"rendered":"2018 Ford F-350 6.7L Diesel Oil Guide: Capacity, Viscosity & Filters"},"content":{"rendered":"
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\"AMSOIL
AMSOIL diesel oil guide for trucks, vans, SUVs and diesel engines<\/figcaption><\/figure>\n

What oil does a 2018 Ford F-350 6.7L Diesel take?<\/h2>\n

For the 2018 Ford F-350 with the 6.7L 8-cylinder Engine Code [T] O Diesel Turbo, the engine oil capacity is 13 quarts<\/strong> (including filter). The manufacturer recommends 10W-30<\/strong> for normal usage and 5W-40<\/strong> for severe operations. If using biodiesel fuel blends (up to B20), a 5W-40 or 15W-40 viscosity is recommended.<\/p>\n

AMSOIL product recommendations<\/h2>\n

Based on the AMSOIL lookup data, here are the recommended products for your Ford Power Stroke diesel engine:<\/p>\n

Engine Oil Options<\/h3>\n
\n\n\n\n\n\n\n
Product Name<\/th>\nViscosity<\/th>\nPart Number<\/th>\n<\/tr>\n
AMSOIL Signature Series Max-Duty Diesel Oil<\/td>\n5W-40<\/a><\/td>\nDEOQT-EA<\/a><\/td>\n<\/tr>\n
AMSOIL Signature Series Max-Duty Diesel Oil<\/td>\n10W-30<\/a><\/td>\nDTTQT-EA<\/a><\/td>\n<\/tr>\n
AMSOIL Heavy-Duty Synthetic Diesel Oil<\/td>\n5W-40<\/a><\/td>\nADOQT-EA<\/a><\/td>\n<\/tr>\n
AMSOIL Heavy-Duty Synthetic Diesel Oil<\/td>\n10W-30<\/a><\/td>\nADNQT-EA<\/a><\/td>\n<\/tr>\n<\/table>\n<\/div>\n

Oil Filter Options<\/h3>\n
\n\n\n\n\n
Product Name<\/th>\nPart Number<\/th>\n<\/tr>\n
AMSOIL Oil Filter<\/td>\nEAO98-EA<\/a><\/td>\n<\/tr>\n
WIX Oil Filter<\/td>\n57151-EA<\/a><\/td>\n<\/tr>\n<\/table>\n<\/div>\n

Other Maintenance Fluids<\/h3>\n
\n\n\n\n\n\n
Component<\/th>\nProduct Name<\/th>\nPart Number<\/th>\n<\/tr>\n
Coolant<\/td>\nAMSOIL Passenger Car & Light Truck Antifreeze & Coolant<\/td>\nANTPC1G-EA<\/a><\/td>\n<\/tr>\n
Coolant<\/td>\nAMSOIL Propylene Glycol Antifreeze and Engine Coolant<\/td>\nANT1G-EA<\/a><\/td>\n<\/tr>\n
Air Filter<\/td>\nWIX Air Filter<\/td>\nWA10679-EA<\/a><\/td>\n<\/tr>\n<\/table>\n<\/div>\n

Engine Oil Specifications & Details<\/h2>\n

Proper lubrication is critical for the 6.7L Power Stroke engine to manage high torque and heavy loads.<\/p>\n

Oil Viscosity Guide<\/h3>\n
\n\n\n\n\n\n\n
Temperature Range<\/th>\nRecommended Viscosity<\/th>\n<\/tr>\n
All Temperatures<\/td>\n0W-30, 0W-40<\/td>\n<\/tr>\n
Above -29\u00b0C<\/td>\n5W-40<\/td>\n<\/tr>\n
Above -18\u00b0C<\/td>\n10W-30<\/td>\n<\/tr>\n
Above -7\u00b0C<\/td>\n15W-40<\/td>\n<\/tr>\n<\/table>\n<\/div>\n

Note: The manufacturer recommends 10W-30 for normal usage and 5W-40 for severe operations. If biodiesel fuel blends (B20 max) are used, the use of 5W-40 or 15W-40 oil is recommended.<\/em><\/p>\n

Oil Change Specifications<\/h3>\n
\n\n\n\n\n
Specification<\/th>\nValue<\/th>\n<\/tr>\n
Capacity (with filter)<\/td>\n13 quarts<\/td>\n<\/tr>\n
Oil Drain Plug Torque<\/td>\n19 ft\/lbs<\/td>\n<\/tr>\n<\/table>\n<\/div>\n

Always check the oil level after refilling.<\/p>\n

Diesel maintenance notes for this vehicle<\/h2>\n