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This is used engine oil that I removed one of my Marine 4cyl engines last summer . I didn't have it analyzed, and recycled it.I did pour some in a jar to let it sit for a few day hoping it would separate, water bottom, oil top, but it never did. I thought it would be interesting to hear what...

years ago I use to watch my dad change his oil, and he would substitute 1-QT of engine oil for 1-QT for transmission fluid.I know that he always said " tranny fluid cleans the inside of engine, like it cleans the inside of the transmission" I don't do this,and think that transmission fluid has...

I would like to know who are the DIY engine builders on this forum? if your a professional that cool too.. and what are you working on? I was thinking maybe this will be a thread that would be interesting, as well as informative for all. I hope this will be interactive thread with questions and...

I find my self moving away from the new style WD-40 can, with the built in spray tube, and back to another brand that still has the old school spray tip.

I need to check my Marine cylinder head for warpage/flatness I would like to know what y'all use for this procedure? my father used a piece of glass, but can't remember how he did this. I would like to use a Machinist straight edge, however there not cheap. I see on the net that some folks...

Hi As the title states. I am working on this engine for a family friend I have worked on engines, and mechanical things for a long time, but i am no professional tech. I just enjoy doing the work, and extra money. I do lots of research on the project I agree to do, however don't always have the...