GingerFlyer Posted May 17, 2015 Share Posted May 17, 2015 That's what a large number of us run. Rotella T6. It is "Heavy duty diesel oil" on the label. Ok, I've seen the T5 and T6 at wal mart. The only heavy duty oil I saw was 15w. I'll have a closer look Link to comment Share on other sites More sharing options...
compsurge Posted May 17, 2015 Share Posted May 17, 2015 Maybe they were referring to that, all the Rotella series are "Heavy duty diesel engine" oil. Either way, as long as the oil isn't too viscous it should be fine. Link to comment Share on other sites More sharing options...
JJr Posted May 17, 2015 Share Posted May 17, 2015 The Rotella debate LOL, many threads on this. T6 5w-40 used for 50k, also use Mazda Oil Filter N3R1-14-302, no oil use for 50k miles, Blackstone said let it go 5k, I still change it at 3.5k, 96k on my LGT, check and change your oil regularly!! Link to comment Share on other sites More sharing options...
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