Noisy hydraulic lifters on start up

[xrblue]

the wife's car has noisy hydraulic lifters when starting up only for a few seconds but id like to cure it.
im thinking a change of oil grade may work.

its a uk 2008 vauxhall corsa d 1400 petrol, currently i have 5w30 magnatec in the engine.

im assuming the oil drains out of the lifters when the engine is off.

im wondering if a thicker oil will help keep the lifters pumped up whilst the engine is off...
or
will a thinner oil help pump the lifters quicker and easier

cheers for any help

[HustleRussell]

5w30 is the correct grade. These engines have all kinds of rattle- injectors, cam chain, valves etc. They seem to rattle on reasonably reliably though so I’d just leave it.

[xrblue]

Thanks for the reply.
Just wondering... Which parts cause the knocking?

[Turn7]

xrblue said:

Thanks for the reply.
Just wondering... Which parts cause the knocking?

The Vauxhall ones usually.....

[RichB]

if it's only for a few seconds why worry?