stanisicb Posted September 21, 2009 Share Posted September 21, 2009 hello everybody, i gotta mack 04 granit dump truck with a mack motor 460 hp when i drive it on highway my oil temperature goes up to 220 F and fan comes on alot coolant temperature never passes 200 f. also i feel like that it is not as powerfull on highway speeds as it used to be. thank you. Quote Link to comment https://www.bigmacktrucks.com/topic/10733-oil-temperature-mack-granit-04-460-hp/ Share on other sites More sharing options...
fjh Posted September 21, 2009 Share Posted September 21, 2009 Have you checked the oil in the trans lately!Is it over full ?These trucks have a trakck record of oil cooler failures! Quote Link to comment https://www.bigmacktrucks.com/topic/10733-oil-temperature-mack-granit-04-460-hp/#findComment-40658 Share on other sites More sharing options...
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