I had similar issue
After 2 months i found the part they were looking for in a what I used to call junk yard dealer he wasnt happy about it but it was 13000 dollar job se he used it try googling and see if you can find it
Did google and here's link...
Use a voltmeter and measure battrrycm weith car off should be between 12c a ndx12.5.then start cat and measure voltage agsin.now your reading alternarltor ifalternator voktage.is i over 15 might have a voltage regulatorssue had siliar issuecwith my wife's caddy service foreman testing gbthe...
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I only change oil once yrlear using syntehetic have dealer do it and it cist 90 buckl.slso havecextendef warranty. Gives me peace of mind but check with warranty folks and ask them
To test how bad it is let your car idle in driveway fir a while and check your oil
I like the suggestion of just tightening valve covers first it's easy to do.good luck.maybe carry couple quarts with you just in case
Agree. I got mine at autozone
They'll install it fir you.heres link for you car.ive had good luck with duralast
https://www.autozone.com/batteries-starting-and-charging/battery?searchText=Battery&redirectUrl=true
Somethings in life just happen
I'd just afjust music sound up to drown it out
If the car is runnng great just let it go.maybe check sir filter mayb R it's come loose or is full and your hearing the blocked air
For me it's just not ok to drive around knowing if I get stopped for any reason I'm getting a ticket snd will have to take tint off or get 1000 buck fine
Ps here's more info on Maryland law
https://www.lawsuit-information-center.com/window-tint-md-dc.html#:~:text=How%20much%20is%20a%20tint,public%20health%20and%20safety%20risk.
I always park away from othrr cars snd never park next to a truck. Im fortunate too my gt is 3rd car so i only have 8000 miles on my 2019 so I steer clear of parking lots fir the most part
Your testing alternator out put
To measure battery voltage the car shouldn't be runnimg
Battery voltage dhoukd be 12v to 12.6
Use a digital volt meyltrr and just measure the battery voltage at the battery's