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    • Cummins Marine Forum Topics
    • Engine oil

      This topic has 3 replies, has 3 voices, and was last updated byAllan Sanders 5 years ago

      October 21, 2018 at 4:33 pm I have QSB6.7 550 hours. They have had Shell Rotella T4 15-40 oil since new i was thinking about changing to rotella T6 full synthetic 5w-40 are the T5 which is synthetic blend 15-40. Any body have any thoughts about using these oils. Thanks

      Started by: Allan Sanders in: Cummins Marine Engines

      3 Replies
      October 23, 2018 at 4:31 pm thanks for replyā€™s

      Last Post by: Allan Sanders posted: 5 years ago

    • Exhaust Temp sensor

      This topic has 6 replies, has 2 voices, and was last updated byAllan Sanders 5 years ago

      September 18, 2018 at 4:01 pm I have 2013 QSB 6.7 We left on 9-8-18 for a 600 mile trip about 2 hours in trip I kept getting a intermittent exhaust temp sensor alarm. Took me awhile to tell it was on the port engine. Put wife at helm went to engine room found the wires from the sensor. it was plugged in to a connector the wire on both ends of the connector were bend in a 90 degree bend and were zip tied real tight. I cut the zip ties ran awhile like that. No alarm the rest …

      Started by: Allan Sanders in: Cummins Marine Engines

      6 Replies
      September 21, 2018 at 1:42 pm Corey thank a lot for your help I have found that sensor through a mercury dealer. I need one more think. is the silver belt the one I need with that serial number to keep a spare on the boat? Thanks again

      Last Post by: Allan Sanders posted: 5 years ago

    • High Exhaust temp

      This topic has 1 reply, has 2 voices, and was last updated byTony Athens 5 years ago

      May 7, 2018 at 3:47 pm ]Just took delivery of a boat with twin QSB 6.7 WITH ZEUS PODS ran yesterday no issues today high exhaust temp would come on and off on vessel view. at around 1800RPM water finally got calm was able to run 2900 RPM no more alarms pulled back to come in marine alarm on then off I felt of the big white exhaust tube it felt cool. getting fuel left engine run the alarm went off about three times I cant even pin it to which engine time I get hand to …

      Started by: Allan Sanders in: Cummins Marine Engines

      1 Reply
      May 8, 2018 at 8:12 pm Allan, With zero engine performance history ( new boat) and zero engine GPH load numbers per 100 RPM in an easy to read chart the you need to put together, NO one could possibly give you solid answer…………….But with that said, I’ll make a guess………. I am guessing your vessel is a 2-step hull at it current operating weight, and has not climbed over the “tying to get over the plane hump&…

      Last Post by: Tony Athens posted: 5 years ago

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