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Hobo2's avatar
Hobo2
Explorer
May 30, 2018

oil temp hit 260 degrees , whats the best synethic oil

Towing my DRV up and past Vail ,CO. on I70 east my oil temp hit 260 degrees, transmission never went over 209 degrees. How hot can the oil get. Whats the best oil for heavy towing.2016 f350 dually
theoldwizard1's avatar
theoldwizard1
Explorer II
Jun 02, 2018
Gearitis wrote:
Motorcraft 10w30 Diesel Oil synthetic blend is not CK-4 spec. And according to Ford and their official statement, do NOT use CK-4 in Powerstrokes, new or old as CJ-4 give better lubrication.

Clicky


Half correct, half incorrect.

The current Motorcraft diesel oils meet and EXCEED API CK-4 specifications so they can be used in other non-Ford engines that spec CK-4. Of course, they meet the Ford WSS-M2C171-F1 specification.

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