Australian Car Repair Issues? Ask an Auto Mechanic for Answers ASAP
No keep the OD switched off .
If the OD is ON then the transmission actually has to work harder and can cause it to overheat .
even though the transmission is set up to drop out of OD when under a heavy load, but could make the transmission change up and down too much depending on the roads being driven .
I would use the OD if i'm on a flat road or slight downward slope.
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Kind regards Greg.