John,

See my post today on using an oil pressure gauge.  This is not "a buzzer
problem," this is a bearing problem!  It sounds like you are on borrowed
time with this engine, the buzzer is telling you something you may not
want to know!

Good luck!

John Iseman wrote:
>
>       I recently switched from Mobil 1 15W-50 to to 10W30 after an
> intermittent buzzer problem. The problem went from intermittent, ie  2500 rpm
> and lower rpm, to a virtually constant buzzing. I then switched to 20W-50 and
> in 4 hours of driving the buzzer went off once for 3 seconds.
>
>       It appears that the system is quite system to changes in viscosity.
>
>       These are my observations for what they are worth.
>
>                          JIseman457@aol.com

--
Stuart MacMillan
Seattle

'84 Vanagon Westfalia
'65 MGB (Driven since 1969)
'74 MGB GT (Restoring)

Assisting on Restoration:
'72 MGB GT (Daughter's)
'64 MGB (Son's)

Parts cars:
'68 & '73 MGB, '67 MGB GT