Final Drive Oil Change - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 23 (permalink) Old 05-17-2011, 11:01 AM Thread Starter
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Final Drive Oil Change

I just changed the oil in my final drive and the old stuff came out very very dirty. I just bought the bike a couple weeks ago and the PO had the drive shaft replaced in '09. I am pretty sure that was the last time the oil was changed. So, I was wondering if this condition of the oil is normal?

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post #2 of 23 (permalink) Old 05-17-2011, 01:58 PM
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When I changed mine I didn't worry about the color of the old oil. I just collected it in a cup and after waiting a bit to allow settling, I put a magnet in the oil and drug it around the bottom the cup to see if it picked up any metal bits/shavings.
Didn't find anything so that made me happy and I refilled it with new oil and went on with my next project.

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post #3 of 23 (permalink) Old 05-17-2011, 05:25 PM
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I guess it matters what oil you use. I highly reccomend Mobil One synthetic ...75w90. or any synth in the 70w~140 range.

The stuff does stink and it does get nasty looking fast. I try to change it every 10k.


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post #4 of 23 (permalink) Old 05-17-2011, 08:14 PM
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i like lucas gear oil.
I also like knifemakers photo.
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post #5 of 23 (permalink) Old 05-17-2011, 08:24 PM
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Quote:
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...I also like knifemakers photo.
Who's head is that anyway?
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post #6 of 23 (permalink) Old 05-17-2011, 09:07 PM
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Quote:
Originally Posted by dariv View Post
Who's head is that anyway?
She's my first.

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post #7 of 23 (permalink) Old 05-17-2011, 10:11 PM
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Quote:
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I highly recommend Mobil One synthetic ...75w90.

KM
KM,
Any particular reason??
I need to change mine and was curious
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post #8 of 23 (permalink) Old 05-17-2011, 11:44 PM
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I was going to run some marine pennzoil 80w90 lower unit gear oil. I mean if it can protect the gear cases,it should be able to stand up to my bike
......right???

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post #9 of 23 (permalink) Old 05-18-2011, 09:12 AM
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here's a question, how do you know how much oil to add?

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post #10 of 23 (permalink) Old 05-18-2011, 09:14 AM
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Final drives are pretty harsh environments for an oil. They get hot, do alot of work, and the do not get circulated and filtered like engine oils. And we are talking about not alot of oil doing this work.

Synthetics shine in hard use applications, and can take high temps without suffering as much as organic oils. You don't need to change the FD oil as often, so a good synthetic just makes sense. I mentioned Mobil one only because it usually scores highest in independent tests.


Any "hypoid" gear oil in the 70-90 weight range will work, and any synthetic is likely better than any organic here.

I should point out that many times when you buy a "marine" or motorcycle oil... It is the same oil they sell for autos, they just have stuck on a new label and jacked up the price.

Unless your talking about a high performance boat, you can't really compare it to a high revving motorcycle engine.

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