Engine less throaty? What?
 

Got my BRZ's oil changed at the dealership the other day after having finished the engine break-in. I noticed today that there seems to be a significant reduction in engine noise. And maybe a loss of power? That doesn't make any sense for an oil change to have done that does it? I tried with windows up and windows down, all with the AC and radio off. I got it all the way to almost redline and even then the engine doesn't sound as throaty as it did before. Am I just imagining this or could there be an explanation? Also it is significantly warmer today than any other day that I've had this car. Almost 70f today wheras it didn't break 45 any other day since I've had it.

Maybe the dealership updated or reset your ecu? It'll feel weird and sluggish as the car learns the throttle again.

Otherwise, a 30 degree temp change is enough to change how the car feels.

Its normal for an engine to be quieter (mechanical engine noise) after an oil change.

How many miles did you have on your dash at oil change?

@GT86Moi about 1250. @murdoc yeah, maybe. They also did a full 26 point (I don't remember how many points it was, lol) inspection. Would they have reset the ECU for that? @go_a_way1 that's what I figured, the gear box seems smoother now too. So, could just be something as simple as the fact that it's quieter due to the new oil.

Replaces engine oil... "gearbox feels smoother now"



That would only happen if they replaced your trans fluid..

Yup it will break down after 500 miles or so and be back to normal but it happens slowly so will likely not notice it.

Okay, maybe I'm imagining things. Haha. Yeah, I didn't think the gearbox should have changed, but it feels like it okay! Gosh.... get off my back. Haha. But really, everything does feel much more different than I'm used to post oil change. I'm still used to a 99 ford exploder that still sounded and felt like shit after an oil change. Haha.

If I want to believe in aliens, I can do that. If I want to imagine that my gearbox feels smoother to make me happier about the fact that the engine doesn't seem as loud, even though the gearbox is the same, I will do that. Haha. But really, aliens. They are everywhere. Watch your back. Keep your guns close and don't forget you only have to outrun your friends. ;)

Its the temperature. I've never encountered a vehicle so sensitive to low engine temps before.

My guess is they did something that required the battery to be unhooked and the ECU is just relearning.
Noticeable difference in sound and power from an oil change or temperature change?


http://media.tumblr.com/tumblr_mcc9ognfDz1qebyic.gif

sounds about right to me.

Did someone plug your noise tube?

You should have hauled ass in the back roads and should have waited 250 miles for the oil change. But it's okay. After I did my 1000 mile break-in. I was driving up mountains hills and back roads for 500 miles where I would take my revs to 7k to seat the rings at high speeds.

http://s9.postimg.org/pbiu0x8zz/I_am_not_saying.jpg

But seriously, like mentioned before I'd bet on an ECU reset.

Use this problem solved!

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To those who say one can't feel/hear the difference, although I don't recommend it for others, I do not use my dipstick to check my oil. I can feel/hear the change enough to annoy me by about a third of a quart below full.

If I feel it and the pan is still full, it's time to change the oil. Mobile-1 0W20 lasts about 3500 miles for me. I'm using Amsoil for the first time and I have to say I'm quite impressed.

Been on Eneos Sustina 0W-20 since 1500km then 0W-50 for the last two oil changes (every 5000km now car is around 26000km). Engine doesn't even burn one drop of oil ever.

Aliens you say? The truth is out there.

https://img1.etsystatic.com/065/0/10...23353_kj9y.jpg

For oil I have been using the ELF synthetic from the dealer.

I did haul ass. I waited until 1k miles, then I put 170ish miles of very spirited driving in some curves and hills. I was shifting at about 6k+ and was getting it up to about 100 constantly.

It's only ever burned oil after a shit ton of canyoning. My one and only track day (bone stock, mind you) it sucked up 8 ounces. A fine little engine, really.