« previous next »
Pages: [1]   Go Down

Author Topic: Front Fork Oil ?  (Read 827 times)

0 Members and 1 Guest are viewing this topic.

Offline Rosinante

  • Hot Shot
  • ***
  • Posts: 364
  • All Generalizations are False
Front Fork Oil ?
« on: April 17, 2021, 02:38:46 PM »
1978 CB750K.  I know that some sources specify a substantially different volume of fork oil compared to the Honda factory.  I intend to use the factory spec, but considerably less oil came out of my forks.  I had never changed them since I got the bike.  No evidence of leaking.  I'd say about 5-6 oz came out, total.

But here is my real question:  The fluid that came out looks grey with a hint of green or blue and it smells funny.  It does not smell like red ATF.  It actually smells more like gear oil, only way thinner.  Any idea what that stuff was?

I think I will fill these forks with 0w20 since I have some lying around.  Anybody feel this would be a huge mistake?
Logged
1978 CB750K

Offline YoungBlood

  • Enthusiast
  • **
  • Posts: 188
  • 1975 Honda Cb750F
Re: Front Fork Oil ?
« Reply #1 on: April 17, 2021, 05:18:48 PM »
Honda factory(correction-shop manual) manual states 10W-30, and I believe 7.2oz. Here's the link:
https://moto-odejda.ru/file/CB750SOHCShopManual.pdf
Logged
When you're going through hell, give it some more gas.

Offline Stev-o

  • Ain't no
  • Really Old Timer ...
  • *******
  • Posts: 35,312
  • Central Texas
Re: Front Fork Oil ?
« Reply #2 on: April 17, 2021, 06:19:59 PM »
Quote from: Rosinante on April 17, 2021, 02:38:46 PM
  It actually smells more like gear oil, only way thinner.  Any idea what that stuff was?

It prolly is what the previous owner had "lying around"!  Just use the proper fluid...
Logged
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Online BenelliSEI

  • Really Old Timer ...
  • *******
  • Posts: 12,283
  • 1969 cb750
Re: Front Fork Oil ?
« Reply #3 on: April 17, 2021, 06:37:29 PM »
I just use ATF, as recommended.
Logged

Offline Bodi

  • Really Old Timer ...
  • *******
  • Posts: 5,772
Re: Front Fork Oil ?
« Reply #4 on: April 17, 2021, 08:39:29 PM »
"The fluid that came out looks grey with a hint of green or blue and it smells funny."
Probably fork oil. There are green brands. Smell? No clue. Some kind of friction modifier or seal additive?
Logged

Offline dave500

  • Really Old Timer ...
  • *******
  • Posts: 17,311
  • WHAT?no gravy?
Re: Front Fork Oil ?
« Reply #5 on: April 17, 2021, 10:23:46 PM »
old fork oil stinks full stop!
Logged
Pages: [1]   Go Up
« previous next »