jviss's latest activity

  • jviss
    That's not generally true. It is true for most of the smaller diesels in sailboats that are based on small tractor or generator...
  • jviss
    Thank you! I assume mine's pretty close to the tank. I don't have a quarter berth, the head is to port and aft; but the aft cabin bunk...
  • jviss
    jviss reacted to patrickfarley's post in the thread I left the lights on with Like Like.
    I replaced the battery today and it cost $30. I purchased the battery in 2019. It still had a warranty. The people a the store were...
  • jviss
    jviss replied to the thread When is diesel fuel too old?.
    Define "old."
  • jviss
    jviss replied to the thread When is diesel fuel too old?.
    That's not entirely so. A small amount of water can be in solution in diesel, in the ppm range, and some can be in suspension as well...
  • jviss
    jviss replied to the thread When is diesel fuel too old?.
    Is the above contradictory? If the water is non-soluble in the fuel, how can the fuel absorb it?
  • jviss
    jviss replied to the thread When is diesel fuel too old?.
    Yea, I'll be sure to tell my buddy with the Grand Banks 43 Eastbay that he should pump out his 450 gallons of diesel at the end of the...
  • jviss
    jviss replied to the thread When is diesel fuel too old?.
    As long as you can keep the algae out, or whatever it is that grows in diesel tanks, and drain the water off before it gets to the...
  • jviss
    jviss reacted to Davidasailor26's post in the thread When is diesel fuel too old? with Like Like.
    Fun thought experiment. If you replace 25% annually then 75% remains in year 1. In year 2 you’ll have 75% of the 75%, which is 56%. It...
  • jviss
    jviss replied to the thread When is diesel fuel too old?.
    This is a funny topic for the obsessive-compulsive engineers among us. For example: in your car, do you always run it to empty before...
  • jviss
    jviss replied to the thread When is diesel fuel too old?.
    Wow, excellent post, thank you. I will have to keep you in my rolodex as the diesel expert!
  • jviss
    jviss reacted to sail sfbay's post in the thread When is diesel fuel too old? with Like Like.
    Great question!!. Yes. Ditto dlochner...........subject comes up frequently on boat forums. As a chemical engineer, I designed many...
  • jviss
    jviss replied to the thread Winterizing the Head Holding Tank.
    That's a good question! It might just be habit, but I always lubricate rubber parts when I put things together, like engines, marine...
  • jviss
    jviss replied to the thread Winterizing the Head Holding Tank.
    One thing I'd like to add, regarding this type of valve, is that they can dribble if there's insufficient back pressure. As a matter of...
  • jviss
    jviss replied to the thread Winterizing the Head Holding Tank.
    Please, Peggy, don't get into a twist over this. I do, indeed, respect your knowledge and experience, and if time and money were no...