Author Topic: Zinc additive  (Read 2151 times)

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Offline Keith

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Zinc additive
« on: February 19, 2017, 06:48:08 PM »
My 750K2 started having problems shifting, sometimes feeling like it was getting hung up between shifts or shifting roughly. I took the advise here and added the zinc additive to my oil. After about thirty miles, I could feel the difference. Now, (as of last summer) it shifts smoothly with a solid engagement in each gear. Just want to say "thanks".

Offline MoMo

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Re: Zinc additive
« Reply #1 on: February 19, 2017, 06:54:39 PM »
Good to hear,  I had a K5 with shipping problems and the zinc seemed to help...Larry

Offline BomberMann650

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Re: Zinc additive
« Reply #2 on: February 19, 2017, 07:54:45 PM »
Yup.  Zinc is the best!  Been using it in my truck.  Just added a bottle of zddp+ to Bloo with an oil change.  About 50 miles on, should be hearing less transmission whine with my next tank of gas.

Offline 540nova

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Re: Zinc additive
« Reply #3 on: February 20, 2017, 06:08:28 AM »
+1. Hard shifting 74 CB450, after 3 oz Rislone zinc, smoothed right out.


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Offline RAFster122s

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Re: Zinc additive
« Reply #4 on: February 20, 2017, 06:22:58 AM »
BomberM, you are adding the Rislone to your transmission, right...not the oil?

David
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Offline RAFster122s

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Re: Zinc additive
« Reply #5 on: February 20, 2017, 06:23:53 AM »
That is the transmission in your truck.
David- back in the desert SW!

Offline BomberMann650

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Re: Zinc additive
« Reply #6 on: February 20, 2017, 06:34:15 AM »
BomberM, you are adding the Rislone to your transmission, right...not the oil?

David

Not rislone.  STP high mileage engine treatment w/zinc.  So far, so good.

Offline PeWe

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Re: Zinc additive
« Reply #7 on: February 20, 2017, 07:11:56 AM »
Some additives contains anti fricĂ­ton stuff like Moly, MoS2. Edit: Anti friction stuff might cause clutch slip.
I read the label more careful too late when I had filled engine with oil. Drained the new oil and refilled without the additive.

My engine is in the break-in phase when worse oil is needed so the rings can be grinded to seal. Anti friction stuff really NOT needed then. Opposite is needed :)

I'll change oil, simple 15W-40 semi-synth motorcycle oil once more after 50km. Run that for 1000km, drain the oil and give it a good oil with plenty of zinc included from the very beginning.
Maybe a quick change shortly after to remove almost all residues of the cheap oil.
« Last Edit: February 20, 2017, 09:38:52 AM by PeWe »
CB750 K6-76  970cc (Earlier 1005cc JMR Billet block on the shelf waiting for a comeback)
CB750 K2-75 Parts assembled to a stock K2

Updates of the CB750 K6 -1976
http://forums.sohc4.net/index.php/topic,180468.msg2092136.html#msg2092136
The billet block build thread
http://forums.sohc4.net/index.php/topic,49438.msg1863571.html#msg1863571
CB750 K2 -1975  build thread
http://forums.sohc4.net/index.php/topic,168243.msg1948381.html#msg1948381
K2 engine build thread. For a complete CB750 -75
http://forums.sohc4.net/index.php/topic,180088.msg2088008.html#msg2088008
Carb jetting, a long story Mikuni TMR32
http://forums.sohc4.net/index.php/topic,179479.msg2104967.html#msg2104967

Offline BomberMann650

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Re: Zinc additive
« Reply #8 on: February 20, 2017, 10:32:24 AM »
Hondaman Recommends

http://zddplus.com

Offline Deltarider

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Re: Zinc additive
« Reply #9 on: February 20, 2017, 12:54:08 PM »
Quote
Hondaman Recommends
http://zddplus.com
Going in echoing mode, Bomberman?
I'm too tired to respond to all these continuing myths and nonsense like put in this thread. It's obvious that some of you have no idea how an additive like zinc works and how little in fact you need. Quantity doesn't equal quality, but (sigh) try to get that across in a market that has been bombarded by this strategy of 'Supersizing' everything. And then this: if you ad stuff to a balanced oil that you don't have the formula of, you just don't know what you are doing.




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Offline BomberMann650

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Re: Zinc additive
« Reply #10 on: February 20, 2017, 01:09:04 PM »
Today is not a good day to be personalizing arguments against me Delta.  I've got enough words from enough people bouncing around my thoughts already.

Would you have preferred a link to the hondaman post where he linked zddp plus?
How about the 3rd party analysis of zinc content in various oils?  Maybe the old epa mandate restricting zinc content in oils?

Besides, I was talking to Rafi.

Offline Don R

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Re: Zinc additive
« Reply #11 on: February 20, 2017, 01:48:41 PM »
  A little Rislone worked for me too.
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Offline colvinry

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Re: Zinc additive
« Reply #12 on: February 20, 2017, 05:49:17 PM »
Oil war!!!!! Go!!!


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Offline Duke McDukiedook

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Re: Zinc additive
« Reply #13 on: February 21, 2017, 06:48:31 AM »
Like Delta said those additives usually have other things in them that are not good for our wet clutches.
In further posts in one of the other threads we came to the consensus that the only way to have the proper amounts of zinc in your oil was to buy it with it already inside without the other yucky crap.

The answer we came up with was a wonderful oil called Spectro. I'll try to link to the thread (it is in the performance section) but even Mark agreed that was the best way to go since nobody knows the deleterious effects of the other additives they put in the ZDDP+ and Rislone. Plus, Rislone says in the data sheet NOT to use it with wet clutches.

http://forums.sohc4.net/index.php/topic,119643.0.html
« Last Edit: February 21, 2017, 06:50:20 AM by DukieDukenDuke »
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Offline PeWe

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Re: Zinc additive
« Reply #14 on: February 21, 2017, 01:20:40 PM »
I remember Spectro and people that have used it for many years.
http://spectro-oils.com/spectro-4/
http://spectro-oils.com/platinum-sx4/

I found one link here, 10% lower price than RedLine I have 20 bottles of waiting to be used. (Smooth gear shifts)
I ordered from UK so several oil changes needed.
I order my car oil from Germany, 24L last time....There 1/3 of the price here. :(


CB750 K6-76  970cc (Earlier 1005cc JMR Billet block on the shelf waiting for a comeback)
CB750 K2-75 Parts assembled to a stock K2

Updates of the CB750 K6 -1976
http://forums.sohc4.net/index.php/topic,180468.msg2092136.html#msg2092136
The billet block build thread
http://forums.sohc4.net/index.php/topic,49438.msg1863571.html#msg1863571
CB750 K2 -1975  build thread
http://forums.sohc4.net/index.php/topic,168243.msg1948381.html#msg1948381
K2 engine build thread. For a complete CB750 -75
http://forums.sohc4.net/index.php/topic,180088.msg2088008.html#msg2088008
Carb jetting, a long story Mikuni TMR32
http://forums.sohc4.net/index.php/topic,179479.msg2104967.html#msg2104967

Offline Duanob

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Re: Zinc additive
« Reply #15 on: February 23, 2017, 08:27:16 AM »
Sometimes a good old fashion oil change with dino oil works fine to fix slipping or sticky clutch problems. Any time I feel something weird with the shifting I change the oil and it usually goes away. These bikes need the oil changed pretty frequently anyway. I've never added anything to the oil after the change, maybe add some cleaner just before. I do mostly city riding with lots of shifting, no problemo. If it's anything more than that, oil won't fix your problem you need to start in on the clutch, cable adjust, new cable, new clutch, etc.
« Last Edit: February 23, 2017, 08:31:32 AM by Duanob »
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