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I had an oil change done for my Cummins 5.9. Everywhere online quotes 12 quarts for this engine. I purchased three x 4 gallon jugs and gave them to the mechanics to use. They put 1 in the filter but another 13 in the engine. They went by the line on the dipstick, which they showed me. So ...

I run my truck at full GVWR permanently as we have a full time camper on a Ram 3500 with Cummins 5.9. Hot and humid conditions. Usually around 30ºC (86F) ambient temps. Lots of hills. We are in Central America and will be in hot South American countries during the next oil interval. Whilst...

Hi Fluid newbie here. Hoping to get some help and learn a little. Currently in Quintana Roo, heading south (thisbigroadtrip.com). The options I have for diff fluid (and in fact a lot of fluid) seems to be based on local preferences but also affordability for locals. I have a stick shift Ram...