4 sec knocking after oil change

[hflaisher]

Hi All:

I normally get a 1 sec knock after changing oil and starting my 2015 Mirage. I try to get as much oil into the filter as I can. This time, I used Valvoline 0-20 and the car knocked for about 4 seconds. Probably more wear in that 5 seconds than in the whole 40k history of the car. Very troubling.

Does anyone have a trick for preventing this from happening AT ALL, short of buying a preoiling system?

Thank you

p.s. my last change was with Mobil 1 0-20 and it didnt knock at all, but it has in the past, even using Mobil 1, perhaps not for that long. I somehow think it might have happened w/any oil.

[Eggman]

What filter are you using? I wonder if it has an anti-drainback valve.

[hflaisher]

What filter are you using? I wonder if it has an anti-drainback valve.

As far as I know, they all do. This is a Fram ExtraGuard. I have read where Fram is not the high quality filter it used to be, but I used it previously and it was fine.

[DottandDolores]

I noticed a knock too and use good oil filters and not cheap syn oil. I never heard it after changing oil but once in a while in very cold winter starts. Do you use ramps? I had a hyundai years ago do this all I did once everything was done was lower the car before starting it no knock.

[Fummins]

I usually hear a rattle for a few seconds after an oil change. Some cars do it longer/louder than others. I wouldn't loose too much sleep over it. I've got one car here with 236xxxmiles(381xxxkms), still runs good after approx 32 oil changes.

[Eggman]

I usually hear a rattle for a few seconds after an oil change. Some cars do it longer/louder than others. I wouldn't loose too much sleep over it.

+1.

Here is a fine example of the shortcomings of troubleshooting over the Internet - without the use of audio or video, what can we do?

Hopefully it's no big deal. Send in a sample for analysis at your next change and you'll know if it's anything to worry about.

Looking forward to seeing your updates on this.

[Loren]

I wouldn't loose too much sleep over it.

I concur. Totally normal. Nothing to worry about.

[hflaisher]

I dont think it is normal. No car should make any grinding/knocking sound on startup for any amount of time. Perhaps its acceptable for under a second after a change, but under normal conditions, it should not happen. I will update when I next change, and it will be mobil 1 from now on if it solves this problem. Thank you for your opinions.

[Fummins]

I dont think it is normal. No car should make any grinding/knocking sound on startup for any amount of time. Perhaps its acceptable for under a second after a change, but under normal conditions, it should not happen. I will update when I next change, and it will be mobil 1 from now on if it solves this problem. Thank you for your opinions.

It's possible you're hearing something different than I have been hearing over the last 4 years? But I doubt it. There isn't much insulation under the hood and no huge piece of plastic and Styrofoam engine cover on these cars to help muffle noise. As mentioned, it's likely the cam timing adjuster thing.
This kinda reminds me of a video I saw on youtube where people were staring at their 3cylinder Mirage engine shaking(like normal) at idle saying it's not supposed to do that and there's a problem with the car. I'm not sure if it was joke or not?

[hflaisher]

No, the engine is smooth and quiet. Just after this oil change and sometimes right at start. I will report back after next oil change w/Mobil 1. I doubt it's the oil though, probably just needed time to get the oil circulated. maybe it would be wise next time to start seconds after putting the oil in the valve cover, before it has drained down to the pan, I think I will do that next time.