Thundercat - Can't Read Oil Level!

[ppeaster]

About a week ago, armed with a Haynes manual, I carried out my first oil + oil filter change on the thundercat.

When I added the new oil I measured out the required amount (2.9 litres).

Yesterday I went for a ride and the oil light came on twice - both very briefly when under hard acceleration at low revs. After the second time I took it easy and came home.

I took this to mean the oil level was too low, so last night I sat on the bike whilst girlfriend checked the oil level. She says she couldn't see any oil in it, so I added more (just over half a litre) but she still couldn't see any oil in the level! The bike had been warmed up.

I didn't add any more because the handbook says the full capacity is only 3.5 litres.

Basically can anyone give me a steer on the best approach? Am I OK to add more and hope the level eventually raises up? Or is there too much oil in it so the level's already too high? I doubt this is the case because I don't think it would cause the oil light to come on whilst riding. But I am no expert.

Any advice appreciated.

[satans_BIG_helper]

May sound like a silly reply but did you put the oil drain plug back in properly ? or maybe the seal on it is leaking or even the oil filter is leaking ?

Quite possibly tho u underfilled if u changed the filter ?

[bish777]

If you changed the oil and the filter youll need to put in the full 3.5ish litres (if i remember from my FZRs-virtually the same motor).

When you check the oil level make sure its on the centrestand (if there is one) or someone is holding the bike upright. Make sure the engine is either cold, or has been allowed to stand for a few minutes, before checking.
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GSXR1100J

[veeeffarr]

If you're checking it while it is warm the oil is still going to be in the engine isn't it.

[Rob W]

https://www.bikechatforums.com/viewtopic.php?t=73656

Why did you post the thread twice when you already had answers there?
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[feef]

thunderace is the same.. it's a pig to see the oil level thru the sightglass...

if you overfill it, you'll probbaly get a sticky/notchy gear change and find neutral hard to get into, and oil in your airbox from the vent.

too much oil can also blow seals.

the oil light in the 'ace comes on all the time, hot or cold.. and usually goes away again pretty quick. It's lying thru it's little luminous teeth

you've measured out the right amount of oil.. it's running and not leaving a slick behind you, I reckon you're safe.

a
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[bish777]

lol disconnect the oil sensor and regularly check the oil level!
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GSXR1100J

[faith183uk]

if you are still worried, drain it out again into a measuring jug, see how much was in there (or to check that its still in there)

If the amount is right, pouring it back in and ignore the oil sensor light.