HILLMAN CAR CLUB
OF SOUTH AUSTRALIA INC

Tech Tips:
Over-filling With Engine Oil
HILLMAN CAR CLUB
OF SOUTH AUSTRALIA INC


More is always better right?  "Better to be over-filled than under-filled," I hear you say.  After all, if the oil level in the sump doesn't reach the pick-up, you'll just get air pumped through the oil passages.
Well, that last part is (sort of) correct, but there's more to know :



From: Keith Johnson [keiths55(at)bigpond.net.au]
Sent: Thursday, 31 July 2003 5:46 PM
To: hillmanlist
Subject: Re: "Hillman - " Hillman Engines

This message forwarded by the Hillman List.

I was told by a mechanic chap once that often the reason for the failure of engine bearings when thrashing down the highway is caused by over full oil.
Apparently the crank foams it up and the oil pump just moves "froth" to the bearings which overheat and fail.
I just thought it was because I was a rev head.

... (snip) ...

Keith

55 Californian



From: Vic Hughes [v.hughes(at)austarmetro.com.au]
Sent: Thursday, 31 July 2003 10:36 PM
To: hillmanlist
Subject: Re: "Hillman - " Hillman Engines

This message forwarded by the Hillman List.

This was apparently a problem with the first Austin 1800s they had the 'full' mark on the dipstick too high and the crank foamed the oil.  As foam consists mostly of air it doesn't lubricate too well.

Vic


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