Welcome Guest - Sign Up today
Welcome Guest - Sign Up today
Store Links Mobile - Shop Now



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.
See more
See less

What type of oil for tilt/trim ?

  • Filter
  • Time
  • Show
Clear All
new posts

  • What type of oil for tilt/trim ?

    I have a 1980 johnson 70hp. which is leaking oil from the top of the centre lift cylinder. (I have one cylinder in the middle and a smaller cylinder on each side of the centre one). I have had a quote over the phone, and was told it would be between $400 and $500 to fix. The mechanic told me if I did not want to fix it straight away I could keep topping it up with oil and carry on using the boat. My questions are: what type of oil do I use, and, the fill hole is half way up the centre cylinder, can I just undo the screw and top up oil level, or must engine be in "up" or "down" postion. I am worried about undoing the fill screw while system is under pressure? Thank for any help you can give.

  • #2
    Sign up today
    Re: What type of oil for tilt/trim ?

    Hello Ken Williams, The oil you can use, while waiting to repair it is dexron 2 or 3 automatic transmission fluid. The motor should be tilted up and you fill the unit to the fill hole. If the oil goes too low to tilt it up, you can add oil while it's down, until it goes up. Slowly remove the screw and allow pressure to escape before pulling the plug out completely. Try to avoid filling the tilt unit with the boat in the water, so you don't spill in the water. You should get it repaired, some people don't like to see oil in the water.