Hi Tom,
I'm told by a number of owners of MGs and other cars that the low
initial oil pressure is because the oil is too thick to pump up into the
tube and the gauge. One B owner here in southern Connecticut has been
using 20-50 and, as an experiment, changed to 5-30 last week. He
reported instant, full, normal pressure immediately at startup. Since 30
was one of the SAE numbers cited in the workshop manual, one supposes
that it's OK.
Within the last week, one of the listers shared with us that the 5 of
5-30 refers to the cold pour measure, and that the 30 refers to operating
pressure loading.
Bob
. Also I think I
>am
>>going to have to change the oil to 10W40 as it takes a while for the
>oil
>>pressure to rise in the morning.
>>Good luck,
>>Simon
>>
>I'm having the same problem with low oil pressure on cold mornings
>(until
>it warms up). Any one have a notion what the problwm might be??
>Tom Buchanan
>buchanan@preferred.com
>http://www.preferred.com/~buchanan/mg.html
>1974 MGB-GT
>
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