• If this is your first visit to the iboats.com Boating Forums, be sure to check out the FAQ. To post a question or comment, begin by signing up. To start viewing messages, select the forum that you want to visit from the selection below.


Announcement

Announcement Module
Collapse

Help Tip: If you have a question that has not been answered to your satisfaction in the archives, it is always best to start a new thread of your own. By starting your own thread, you will receive the maximum number of views by forum members.

Below are some additional forum policies in hopes of all iboats members will follow, Thank you.

1. Please do not reply to old topics or hijack existing topics. Old topics of a technical nature are like a library book, Please do not write in them.

2. Old topics should be considered archives and used for reference only. Please do not reply to them.

3. Do not take over someone elseís topic (aka hijack) with your own question, even if it is similar. If you have a question that has not been covered to your satisfaction in the archives, it is always best to start a new topic of your own.

4. If you have a question for the original poster (OP) and the topic is over 30 days old, send the OP a PM, he may not even visit the forums any longer, or may not notice your question in the old topic.

5. By starting your own topic, you will receive the maximum number of views by forum helpers that may not even notice your question when itís posted at the end of someone elseís topic. And those answers will be specific to your particular issue.

6. Please do not post to topics that have been inactive for more than 3 months unless you are the original poster. We have very active forums and any topic that remains inactive for that long should be considered "dead". It is especially confusing when there is an entirely new question posted to an old topic.

7. Posting at the end of any topic is considered to be hijacking the original posters topic which in turn subjects the topic to be closed if it continues to happen thus not making it fair to the original poster in the future had for some reason he/she needed to return for additional information or provide an update of the problem solved which is always welcomed within a reasonable amount of time frame.

8. Please note that you should see a red banner pop up near the bottom of each inactive topic asking you not to reply to old topics. The Red banner will read: Please note this topic has been inactive for 90 days. For the best results, please start a new topic.

Thank you all in advance for doing your part in helping iboats run a smooth ship.

Additional forum rules linked below.
http://forums.iboats.com/forum-rules-guidelines-405/
See more
See less

Lower Unit Lube Capacity Question

Page Title Module
Move Remove Collapse
X
Conversation Detail Module
Collapse
  • Filter
  • Time
  • Show
Clear All
new posts


  • Lower Unit Lube Capacity Question

    I did my first lower unit oil change yesterday. It was really easy, and I am now embarrassed that I paid to have the job done in the past.

    After draining the oil I started pumping in the new oil. The lower unit took in a full quart, and I never saw oil ooze out the top hole. Since I ran out of oil, I replaced the drain plugs. I then poured the old oil back into the quart bottle that the new oil came in. The amount of old oil was approximately the same as the new oil. I checked my manual for lower unit oil capacity information and could not find anything.

    Since I replaced approximately the same amount that I drained, do I need to worry about adding more oil? I think I will pick-up another quart of oil and pump until I see oil ooze out the top hole, but I would like knowledgeable opinions on this. Anyone know what the normal oil capacity is? My motor is a 1978 Johnson 140 hp V4.

    Thanks


  • #2
    Re: Lower Unit Lube Capacity Question

    Fill to it comes out the top hole.

    Comment



    • #3
      Re: Lower Unit Lube Capacity Question

      The listed capacity of your gearcase is 37.8 ounces. See page 2-6 of your factory service manual.

      But as 4.0l says, with the motor in running position, the case is full when the oil runs out of the vent hole. Too much oil and you can damage a seal when the oil heats up.

      Comment


      Working...
      X