How much fork oil? - Triumph Forum: Triumph Rat Motorcycle Forums
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post #1 of 9 (permalink) Old 01-24-2015, 09:06 PM Thread Starter
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Minitwins
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How much fork oil?

So Id like to change the fork oil in my 98 Tiger. I have the Triumph Service Manual, not very helpful compared to my old KZ manuals.

My bike the VIN is 62800ish so the fork should be Showa and the oil should be filled to 144mm from the top.

My question is, and I hope someone here can help, what does that translate to in terms of volume? I'd like to just pour in the oil and check that it is correct, rather than trial and error to get the correct measurement from the top of the fork.
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Last edited by BC98Tiger; 01-24-2015 at 09:09 PM.
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post #2 of 9 (permalink) Old 01-24-2015, 09:10 PM
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You are better off using a level over a capacity. Sometimes they list both, sometimes they don't. If you don't have a gauge, you can cut a zip tie or something to the proper length and fill up to that level.
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post #3 of 9 (permalink) Old 01-24-2015, 09:14 PM Thread Starter
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Originally Posted by Dralb View Post
You are better off using a level over a capacity. Sometimes they list both, sometimes they don't. If you don't have a gauge, you can cut a zip tie or something to the proper length and fill up to that level.
Yes, I'd certainly check that the "level" is correct, but I was hoping to get an idea of volume so I could at least get it close prior to checking the level.

Cheers,
Ross
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post #4 of 9 (permalink) Old 01-27-2015, 04:32 PM
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What viscosity oil are you using?

Shell makes a dandy fork oil called TELLUS.

It comes in many viscosities. I use a combo of #32 and #46.

MSF RiderCoach. Retired!
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post #5 of 9 (permalink) Old 01-28-2015, 02:39 PM Thread Starter
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Quote:
Originally Posted by NORTY FLATZ View Post
What viscosity oil are you using?

Shell makes a dandy fork oil called TELLUS.

It comes in many viscosities. I use a combo of #32 and #46.
I hadn't quie decided on fork oil weight. The service manual says 10W20 for the Showa forks.

But hrere's the deal. I decided to attack what I feel is the root of the squishy forks, so I ordered new springs form Racetech.

I have a litre of 10W fork oil on the shelf in the garage. So when the springs arrive I'll use that and see how it goes.

Cheers,
Ross
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post #6 of 9 (permalink) Old 02-24-2015, 12:15 AM Thread Starter
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I ordered new springs from Race Tech. I dismantled the forks to install them, but they were the wrong ones. New ones are on the way.

But as to oil quantities. I dumped out the old oil into a measuring cup. It measured about 600ml. That seemed like a lot of oil to me.

So with springs out, fork tubes compressed, I put in 600ml of oil. Measured down from the top of the fork tube. It was pretty close to the spec of 144mm.

Cheers,
Ross
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post #7 of 9 (permalink) Old 12-07-2015, 11:54 PM
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I use a 50/50 blend of 10w & 15w fork oil. 650 cc per side works well for aggressive riding on gravel roads. Been doing nigh on 15 years with these specs.

Ken / Fishnbiker,
on Vancouver Island, BC
& Felix, 95 black Tiger
& Buzz, 08 Blue Suzuki DR650
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post #8 of 9 (permalink) Old 02-04-2017, 05:07 AM
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more oil means less air... less dive, and a more firm ride. more oil will firm things up but can eventually make for a harsh ride.
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post #9 of 9 (permalink) Old 02-04-2017, 08:53 AM
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I picked up a little fluid pump over at Harbor Freight. I just add back in what I pump out.
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