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Hobo2's avatar
Hobo2
Explorer
May 29, 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 01, 2018
TxGearhead wrote:
10-30 may be approved, but my 2014 F350 diesel owners manual said to use 5w-40 for severe duty, which was defined as towing.

Motorcraft SAE 5W-40 Full Synthetic Diesel Motor Oil

You are NOT going to find this at your local Walmart !

TxGearhead wrote:
Might go to T6 5w-40 in the 2018.

According to Shell this does not meet the Ford WSS-M2C171-F1 specification.

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