Conerning Engine Noises, 5.0 GT Convertable

[geep81]

If I can just say a few things.

You bought the car end of last year but you are stating things done every 5k, how would you know that?

How would you know this only started happening at the 15k mark? You have owned the car a few months you said.

Likely, and I would bet money on this, this is how the car has always sounded.
If it bothers you that much you got four solutions:

1) sell the car
2) add a bottle of ceratec with every oil change to help a bit
3) learn to love the sounds of the coyote
4) louder exhaust

Did you not do any research on these engines and find the million threads across the internet on the way the engine sounds before you bought?

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[WItoTX]

^^^ Damn dude, wake up on the wrong side of the bed today?!

 

[MidnightStars]

^^^ Damn dude, wake up on the wrong side of the bed today?!

He did make some solid points though. If you are buying a vehicle any "better" than your common daily driver, you should at the very least look into a list of known issue, with the "Coyote tick" being quite a infamous one.

 

[2020GTGuy]

Hello,

No offense taken to any answers or questions here, appreciate everyone commenting in this thread with their thoughts and info.

Did "some" research, mostly saw the 2K rattle and shift fork issues. And most people said the tick was multiple things so I did listen for it when buying the car.

As for asking me how I know oil change interval, well I know I did them, and the service history gave me the others I did not do.

Anyway, I have 5W-30 now and waiting for a warm day to throw the ceratec in. Then enjoy the car.

Thank you "paddles" for the explanation and "HKusp" for the recommendation too.

I will update when/if this makes it go away. Using 1 bottle for now.

 

[Mike Pfeifer]

I had success with 1/3 bottle.

 

[2020GTGuy]

Alright follow up time: 1 bottle of Ceratec used and about 80% to 90% of the noise is GONE. At first almost dead silent (or maybe my perception of it after seeing it go in like a placebo effect), now pretty much sitting at 90% noise reduction after 500ish miles.

Now all i hear is the noisy A10 auto trans.

So I guess since 1 bottle did the trick, no need for two unless the noise comes back, and if that does not work I am done worrying about it. Its clearly not hurting anything based off TSBs and other users.

I will keep this thread to document any other interesting observations [and perhaps a oil sample analysis]. Anyways, let me know what you think, all comments and ideas welcome!

 

[geep81]

Put the ceratec in with every oil change and you'll be good. I did this for the first 5 years I owned my car.

If you ever start doing your own oil changes/not dealer oil changes, Pennzoil Ultra Platinum Plus comes with enough of the boron and zinc (These are the two main additives that quiet the tick) in it that you don't need ceratec to get rid of the noise. This is what I am on to now and it's great.

 

[2020GTGuy]

Update: almost 8,000 miles later, 2 oil changes later, added a bit of ceratec (1 bottle-ish) after each oil change, run fines. still 80% to 90% of sound gone even when I listen inside the parking garage.

Oil consumption is inline with owners manual and others. I have driven the thing on two road trips, had some fun, and all runs well enough.

Now the soft top issues (not waterproof) and A10 auto being loud is still there but no better or worse lol.

 

[geep81]

Update: almost 8,000 miles later, 2 oil changes later, added a bit of ceratec (1 bottle-ish) after each oil change, run fines. still 80% to 90% of sound gone even when I listen inside the parking garage.

Oil consumption is inline with owners manual and others. I have driven the thing on two road trips, had some fun, and all runs well enough.

Now the soft top issues (not waterproof) and A10 auto being loud is still there but no better or worse lol.

If you ever want to stop adding the Ceratec, switch the oil to Penzoil Ultra Platinum Plus- it has more of the additive that Ceretec has that makes the tick go away.

I added Ceratec for 5 years and now use the Penzoil with no complaints.

 

[horsepower addiction]

Here's a compelling explanation, not sure if it's accurate but it seems to make the most sense to me.

Seriously doubt it. They have tried different oil filters with and without the bypass.high pressure and high volume oil pumps do seem to make a difference. If it was a lifter zddp would take care of it. If it was a lifter collapsing it would miss fire. Also I don’t know about anyone else but my coyote has way more than 40psi oil pressure when cold. Can’t say 100% but doubt it

 

[mmff88gt]

Now the soft top issues (not waterproof) and A10 auto being loud is still there but no better or worse lol.

I've never even tried to do anything about the BBQ tick, it's just the nature of the beast. As to the soft top issue, I have a 2019 convertible that I drove daily until retirement. I used to scrub the top with a horsehair brush using 303 Tonneau Cover & Convertible Top Cleaner, then let the top dry in the bright sun until all the fabric reached about 150 degrees. After masking the car, I would spray on a moderate coat of 303 Fabric Guard for Outdoor Fabrics, then immediately rub it in using a plastic "food handling glove." I would do two applications of the Fabric Guard this way every 6 months.
I tried to avoid using soap on the top. When I washed the car, I would "flood" the top with water, then squeegee it off and towel dry it, unless it had bird droppings or tree sap on it. Water would always bead on my top. Now that my car doesn't sit out in a parking lot every work day year 'round, I get away with only doing the process once a year and water still beads well. I have never had any issues with the top not being waterproof. After water sits on the top for a long time, the surface will look wet, but I've never had any intrusion.

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