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Astra oil pressure warning light coming on

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terry paget:
Daughter's Astra 1.6 oil pressure warning light is coming on, she complains. It happened once in December when car was here, I checked oil level, it was OK. It's doing it much more now, car is in London. I know, it could be a failing switch, or a failing engine. I advised her to call the RAC.
If it's a faulty switch a local garage could change it. If it's a failing engine I have a problem.
I have sorted the door lock on the Omega she had before; I could return it to her, but then how would I get the Astra home?
There must be people offering a service of moving cars about, at a price. Please advise.

aaronjb:
Plenty of places will move cars around - expect about £1.50/mile minimum.

Anywhere you could temporarily hook a real oil pressure gauge up to if you went there? That would be an easy way to see if its safe to drive home or not..

dave the builder:
Blimey Terry  :(
which car ? the 160k+ onen or the 120k ?
assume either way it has P155 5w30
rather tan the TC 10w40 semi I suggested  ;D
I did an oil change on then wife's new astra H 1.6 recently and noted the oil filter for z16 xep is not the standard spin on that fits most vauxhall of the era but a bigger spin ion filter, what did you fit ?
oil pressure switches are common to leak or bring the low pressure light on true enough BUT.....
an oil and correct filter change (to 10w40, not P155) may be a good idea
and there is that possibility that you have blocked the oil pick up with crap, washed out with P155 oil  :-\
also you need to confirm it is oil pressure and not oil level warning light.

as for recovery back , being london , i expect it won't be cheap  :(

also also
being london , i expect the car sits in traffic for hours and gets hot ,which thins the oil anyway , plus if the thermostat is not opening or any problem with the fans not working (you need to check ) will thin the oil to bring light on .
there is no temperature gauge on the dash ,you have to view the temp via the radio/display or bluetooth elm327 (about £5 delivered) or similar .

anyone local to the car that could do an oil and filter change Terry ?

Kevin Wood:
A 20% difference in hot viscosity isn't going to be the problem, especially in the middle of winter.

Agreed that a manual pressure gauge you can check it with would be ideal, but, if it's genuinely got no oil pressure, then it's probably already far enough gone that it doesn't matter. :(

STEMO:
Tell her to get it to a local garage for an oil and filter. If she plays the damsel in distress, they may do a quick pressure test for her. Much less expensive than having it brought back home on the back of a truck.
Or........drop the omega off and visit a local garage yourself. Don't try the damsel in distress bit, though. They may call the police.  ;D

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