Maybe a pair of locking pliers, vise grips over here, or a pipe wrench to grip the round part.  

Be sure you go CCW.
Never tighten it real good.
Just fingers.

TheNewBee1 wrote on 04/07/15 at 03:05:02:


File (or chisel) a slot in the cap so you can use a drift (some folks call it a punch) to use a small hammer on the drift in the slot to tap the cap counterclockwise.  If you don't have a drift (a punch), a flat blade screwdriver, or a thick nail with the point ground flat, might do.

Run the motor for ten minutes to get it really hot.  Or, if you are skillful with a torch, use a propane torch to heat up the area around the cap.  Be careful, don't get very close... that is aluminum.

Get some ice and have someone hold the ice on the broken cap while you tap the drift in that slot to move the cap counterclockwise.  Make sure the ice only touches the cap, and start tapping as soon as the ice touches the hot cap.  Keep tapping until it breaks free.  It might take a minute or so.  Heat, chill, tap, and repeat as necessary.

The ice will shrink the cap .001 or so.  That, and the shock of the drift on the slot (acting like an impact driver/wrench), will break it free.

Try some penetrating oil on it a few hours before you do the "breaking it loose with the drift" trick.

The video below is just a hint of how to make this work.  I used my bike, but the cap is in good shape and in a different position than yours, so it is just an approximation of what you'll need to do.  You'll probably have to tap it harder than in this video "hint."






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Thanks people! Will let you know how this will work out. And yet again, this forum (you people) have been of great assistance.

cheers!

Yes it worked! The video and the picture did the trick!

I couldnt warm up the engine because it was low on oil. But after i made ā hole in the cap (like in the picture) and using ā screwdriver and ā hamer it came of after two firm blows.

Thanks!

Well now you learned, oil fill caps, finger tight.

However, I did make a 'tool'. for the oil cap.
Used it once, when a PO, put on a oil fill, 'tight',
on another bike.

Went to the junk yard, picked up a rusted socket.
That fit over the cap. (it was the correct price, free)
Pit a dab of tape of the hole in the socket.
Took the oil cap, (from the 06), and smeared a thin layer of grease on it.
Then filled the socket with epoxy, (only about 1/3)
Then put the cap in it, (upside down),
Now, a socket, which perfectly fits the slotted top oil fill.

Worked perfect on the 97, which the PO apparently believed that was a 'torque', item.

Thinking, that using a, 'putty', type epoxy, which doesn't run.
One could do that, while the cap is in place, before the top is broke off.