[tmp123]

So I changed the oil on my zl1 after it sat in the garage all winter.
Stupid me I did not run it before the oil drain.


I pre filled the oil filter and poured the new oil in.


At startup I heard a knock noise for a second or two. It freaked me out.


Cars runs fine and noise free.


I dont remember hearing this before.


Did this happen to anyone here?


Thanks in advance

[2SS Capt]

Originally Posted by tmp123

So I changed the oil on my zl1 after it sat in the garage all winter.
Stupid me I did not run it before the oil drain.


I pre filled the oil filter and poured the new oil in.


At startup I heard a knock noise for a second or two. It freaked me out.


Cars runs fine and noise free.


I dont remember hearing this before.


Did this happen to anyone here?


Thanks in advance

If you pre-filled the oil filter (all the way) you should be fine... I know it takes 4 or 5 "fills" of the oil filter to actually be fully pre-filled (takes time for it to flow past the media), fill the filter, wait a bit and fill it again, keep filling it until it doesn't take any more oil...

[SWFLZL1]

Originally Posted by tmp123

So I changed the oil on my zl1 after it sat in the garage all winter.
Stupid me I did not run it before the oil drain.


I pre filled the oil filter and poured the new oil in.


At startup I heard a knock noise for a second or two. It freaked me out.


Cars runs fine and noise free.


I dont remember hearing this before.


Did this happen to anyone here?


Thanks in advance

I’m sure all will be okay, just needed to build pressure for a split second. You should hear my Duramax, since it’s first oil change, it’s horrible sounding on a first start.

[arpad_m]

Originally Posted by SWFLZL1

I’m sure all will be okay, just needed to build pressure for a split second. You should hear my Duramax, since it’s first oil change, it’s horrible sounding on a first start.

Haha, I'm not sure that gave him the peace of mind you intended

[arpad_m]

Originally Posted by tmp123

So I changed the oil on my zl1 after it sat in the garage all winter.
Stupid me I did not run it before the oil drain.


I pre filled the oil filter and poured the new oil in.


At startup I heard a knock noise for a second or two. It freaked me out.


Cars runs fine and noise free.


I dont remember hearing this before.


Did this happen to anyone here?


Thanks in advance

Nope, I always drive the car first, then wait for the oil to cool to a temp that my hand and arm can handle in case I fumble the drain plug.

[Gunkk]

Probably just the chain tensioners filling back up with oil for a few seconds after the long winter's nap.

[LiqTenExp]

You can always hold down accelerator pedal (flood clear mode) and run the starter to build oil pressure after doing an oil change...

[tmp123]

Originally Posted by LiqTenExp

You can always hold down accelerator pedal (flood clear mode) and run the starter to build oil pressure after doing an oil change...

I would love to but its a 6 speed manual, i dont have 3 legs lol

[Camfab]

Originally Posted by arpad_m

Nope, I always drive the car first, then wait for the oil to cool to a temp that my hand and arm can handle in case I fumble the drain plug.

This 100%

[NashZL1]

I drive my Mercedes SL450 every two weeks or so. The rattle at startup after it sits is normal... apparently. Goes away in 2 seconds. Just takes a bit till the oil pressure and flow come up.

[PowerDemon]

Originally Posted by LiqTenExp

You can always hold down accelerator pedal (flood clear mode) and run the starter to build oil pressure after doing an oil change...

Has anyone actually tried this? I heard about it and tried it in my GTI… for about 2 seconds until it skyrocketed to 3k rpm

Not my best moment.

[tmp123]

I changed the oil and no glitter in oil. No noise at startup.


Next , the oil filter will come apart to see if any debris is visible.


Also I sent out the oil to be tested.


SO far so good