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    • Cummins Marine Forum Topics
    • Silicon in engine oil

      This topic has 2 replies, has 3 voices, and was last updated byRob Schepis 4 years ago

      October 9, 2019 at 6:49 pm Cummins 6 CTA 8.3 450hp When I was in the process of purchasing this boat with twins it had 350 hours.I had the oil sample taken and the test results fine. After purchase I changeed the oil & filters using Rotella 15/40 and stored the boat for the winter. In the spring I added ,Seaboards Air sep system to both engins. Ran the boat about 175 hours and had the oil sampled before changing it. The samle came back with a critical reading for sili…

      Started by: Rene Dupuis in: Cummins Marine Engines

      2 Replies
      October 10, 2019 at 6:38 am Was the pre-purchase oil sample and the recent ones taken by the same person using the same sampling methods and the same apparatus?

      Last Post by: Rob Schepis posted: 4 years ago

    • 6 cta fan belt cover

      This topic has 3 replies, has 4 voices, and was last updated byPhilip 5 years ago

      May 3, 2018 at 7:20 am Getting ready to replace the belts and want to get some hints as to how to remove the cover at the front of the engine? Seems that the nuts on the brackets are on the inside of the cover except one? Please help.

      Started by: Rene Dupuis in: Cummins Marine Engines

      3 Replies
      May 8, 2018 at 2:29 pm Any brand oil that meets spec is fine. Most choose Dino oil since itā€™s cheaper and the synthetic. There are lots of good brands and unlike other color engines that specific oil seems to cure an issue here and there Cummins do just fine with plain Dino oil…. Delo, Mobil, Shell Rotella, Valvoline, etc… they all work just fine. Once it meets spec spend the money on a quality oil filter (fleetguard) and regular oil changes are all you ne…

      Last Post by: Philip posted: 5 years ago

    • 2 micron fuel filter

      This topic has 1 reply, has 2 voices, and was last updated byPhilip 6 years ago

      April 11, 2018 at 6:04 pm I have a pair of 6 CTA’s My question is, I want to run 2 micron filters in the Racors, before the filter on the engine. I have vacuum gauges and can monitor them and change when needed. My reason is ,its so much easier to change the Racors, than the engine filters where there is a good chance to loss fuel prime.

      Started by: Rene Dupuis in: Cummins Marine Engines

      1 Reply
      April 11, 2018 at 6:29 pm Good thought, bad idea. You run a risk of clogging quicker than you can monitor. If your having issues with priming the last chance on engine filter investigate the following: Fuel Filtration Squeeze Bulb Priming on Diesel Powered Boats

      Last Post by: Philip posted: 6 years ago

    • Cummins coolant

      This topic has 3 replies, has 4 voices, and was last updated byWilliam Walter 6 years ago

      November 18, 2017 at 3:25 pm I just bought a boat with 6CTA’s and want to know do I need to use “Cummins Coolant” when I flush and replace ? If not what brand is recommended?

      Started by: Rene Dupuis in: Cummins Marine Engines

      3 Replies
      November 19, 2017 at 8:12 am I replaced my coolant last winter on all my engines.i went with the fleet guard because I was able to purchase the concentrate on line for the same price as what I would have paid for the prestone and it was factory recommended.besides I do like the blue color.Bill

      Last Post by: William Walter posted: 6 years ago

    • Raw Water pump

      This topic has 1 reply, has 2 voices, and was last updated byTony Athens 6 years ago

      October 1, 2017 at 5:05 pm Does the 6 CTA share the same pump and failure issues as the 6 BTA engine?

      Started by: Rene Dupuis in: Cummins Marine Engines

      1 Reply
      October 2, 2017 at 6:03 pm Same exact pump is supplied by Cummins———The Sherwood 1730 or one of its earlier derivatives which have even a more colorful history……………..Tony

      Last Post by: Tony Athens posted: 6 years ago

    • Cummins aftercooler service intervals

      This topic has 2 replies, has 3 voices, and was last updated byRob Schepis 7 years ago

      April 24, 2017 at 7:25 pm Looking to fine out how often I can expect to service the aftercoolers on 6 BTA 5.9 Ā  Ā 330 hp. I would assume that this interval would be different for salt and fresh water. I plan on running 200 + hours in the coarse of a 3 month period.

      Started by: Rene Dupuis in: Cummins Marine Engines

      2 Replies
      April 29, 2017 at 6:32 pm CT? Ā Are you up the CT Rvr? Ā If they were never done the Seaboard Way then they are already overdue. Ā Scott’s link and timeframes are good.

      Last Post by: Rob Schepis posted: 7 years ago

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Viewing 6 topics - 1 through 6 (of 6 total)