UKSaabs

Had a similar problem doing an oil change on my 9-3 Convertible.Had to remove the drain plug with a 12" Stilson wrench and a length of steel tube.I fit a new drain plug at each oil change.No problems so far.I guess the previous oil change had been done by somebody that thought that the sump drain plug holds the whole of the car together.

Anyone tried one of these??
http://www.quickvalve.co.uk/index.htm

Something like this could help, if in the correct size: http://www.amazon.co.uk/Silverline-467893-Piece-Damaged-Remover/dp/B001C7T20E/ref=sr_1_3?ie=UTF8&qid=1387583853&sr=8-3&keywords=Bolt+Grip+Remover

When I've had stuck sump plugs I take a Dremel to the shoulders. The sticking is caused not by the thread but by the contact area between the base of the shoulders and the sump. A couple of cuts (they don't need to be full depth) through the shoulders parallel to the nut sides allows this pressure to be released and it then comes off:

Hi,Had a few frozen/stiff nut and bolts on my c900 recently.
Then a guy suggested a spray called[[ Crack It ]]since then ive had more success with stiff nuts and bolts.
Tommyr.c900i 16.

Jumping back on this one..

Before I get an old socket and the welder out (as my previous solution on page 1), so far:

Nut started rounding from spanner.
Tried 6 point socket (I know...). Rounded more.
Tried the mole grips. Rounded even more.
Tried the "cut the flange" method - think I cut it too close to the head so it's cutting into the actual shank. No joy.
Got the chisel and hammer out. Section of flange removed rather than freeing plug. Tried mole grips again. Rounded even more - now smooth.

Before I get a set of Irwins from Screwfix tonight, any other tips?

Just get the irwins ... have used them more than once in similar situations (not just sump nuts) and I've found them to be incredibly effective ...


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Cheers, sounds. Will pick up a set.

There's a basic set (which comes with a box) and an expansion set which fits into the gaps in the standard set's box. Not sure if you can get the expansion set from screwfix, from memory I bought mine through a seller on fleabay ...

The screwfix set is the 10-16mm set in a box:
http://www.screwfix.com/p/irwin-bolt-gr ... stid=64117

seller I bought mine from (nearly 2 years ago) lists them as follows:

base set - £21.35 - includes sizes 10mm(3/8"), 11mm(7/16"), 13mm(1/2"), 14mm(9/16") & 16mm(5/8")
expansion set - £18.59 - includes sizes 8mm(5/16"), 10mm, 13mm, 11/16" & 19mm(3/4")

Irwins for the win!

I bought mine to undo a sump nut, the result was it came out but ended up as below (click for a larger image)

I've refitted worse..

Just fitted a "quick valve" after chisseling off my second plug. Hope that'll solve it, no oil on the driveway yet.

keenbfb wrote:Anyone tried one of these??
http://www.quickvalve.co.uk/index.htm

this looks impressive - I'm willing to give it a try...

will order, and install and report back at next oil change (which won't be for a few months actually)..

rich

Erbauer rounded bolt remover, same as erwins but half the price and actually very good.

Looks a familiar sight ... Lol

Got a set of irwin bolt/nut removal sockets ....amazing bit of kit never fail, top quality made in the USA

rich wrote:

keenbfb wrote:Anyone tried one of these??
http://www.quickvalve.co.uk/index.htm

this looks impressive - I'm willing to give it a try...
will order, and install and report back at next oil change (which won't be for a few months actually)..
rich

my mechanic fitted this for me at last service, last week...
will try and get some pics up at the weekend

rich