Does running rich cause oil to go dirty faster and cause fuel dilution?

[silviaz]

I noticed my oil on my rb25 stays gold for about 3,500km roughly. Then goes light brown after that. Probably around 4,500 mark it goes dark brown (this is me driving normally with no / minimal pulls as i blow black smoke when i boost) (when I drain the oil it's black at 5,000 no metal shavings though in the filter or oil)

I noticed now that it's been under 3,000km and it's dark brown. I think it's because I've been doing a few pulls more than usual (pulls means, in first gear going up to 5000-7000 rpm)

My oil doesn't smell like fuel at all, and isn't causing me any issues but I don't want to get bearing wear (yes I'll be getting my car tuned soon to)

I don't know if it's just me or if my oil is a bit thinner (I'm comparing brand new oil to oil that has roughly 2,500km from memory so might not be a good comparision.

Edited August 8, 2024 by silviaz

[GTSBoy]

The answer to both questions in the title is "yes".

[silviaz]

Just now, GTSBoy said:

The answer to both questions in the title is "yes".

Ok cheers. I'll get that tune asap then and probably even do an early oil change.

[Murray_Calavera]

1 hour ago, silviaz said:

i blow black smoke when i boost

Can we not just turn the boost down until you get the car tuned? 

[GTSBoy]

1 hour ago, Murray_Calavera said:

Can we not just turn the boost down until you get the car tuned? 

This is me....for the last year or so.

[silviaz]

1 hour ago, Murray_Calavera said:

Can we not just turn the boost down until you get the car tuned? 

I'm not sure how to do it, I'd rather leave it to the tuner, the thing is I think it probably technically runs rich when I drive normally as well I just don't blow smoke (unless I do a hot start a bit of black smoke leaves the exhaust, but never have smoke on cold start)  

Edited August 8, 2024 by silviaz

[Murray_Calavera]

41 minutes ago, silviaz said:

I'm not sure how to do it

What boost controller/ECU are you using? 

[silviaz]

2 hours ago, Murray_Calavera said:

What boost controller/ECU are you using? 

I'll double check the model. I also got told though from my mechanic I can plug it out as well and I'll go back to wastegate pressure or something like that? 

Edited August 8, 2024 by silviaz

[TurboTapin]

1 hour ago, silviaz said:

I'll double check the model. I also got told though from my mechanic I can plug it out as well and I'll go back to wastegate pressure or something like that? 

If you disconnect the line going to your wastegate, you'll run spring pressure. 

[Kinkstaah]

7 hours ago, silviaz said:

because I've been doing a few pulls more than usual (pulls means, in first gear going up to 5000-7000 rpm)

(yes I'll be getting my car tuned soon to)

You shouldn't be doing anything but driving the car to the tuner, off boost.
Doing this could well be within the boundries of comparing:

"Does my oil go black faster"
and
"Do the pistons usually stay inside the engine?"

[joshuaho96]

13 hours ago, silviaz said:

I'll double check the model. I also got told though from my mechanic I can plug it out as well and I'll go back to wastegate pressure or something like that? 

Unplugging the wastegate solenoid should be wastegate pressure. Do not unplug the vacuum lines, leaving it at atmosphere will cause a big overboost event.

[MBS206]

15 hours ago, Kinkstaah said:

You shouldn't be doing anything but driving the car to the tuner, off boost.
Doing this could well be within the boundries of comparing:

"Does my oil go black faster"
and
"Do the pistons usually stay inside the engine?"

"Why do my pistons have little dimples in them kind of like a golf ball?"

"Why does my pistons have a huge hole in it"

"Why did my valves burn out in my head"

"Why did my turbo get cooked?"

[silviaz]

6 hours ago, joshuaho96 said:

Unplugging the wastegate solenoid should be wastegate pressure. Do not unplug the vacuum lines, leaving it at atmosphere will cause a big overboost event.

Not the wastegate solenoid, he was saying the actual boost controller. The vacuum line going to the boost controller he said just to tie that up so I don't have a boost leak.

[GTSBoy]

4 hours ago, silviaz said:

he was saying the actual boost controller

And that would be wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong

[silviaz]

14 hours ago, GTSBoy said:

And that would be wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong

Alright, I believe you 😂 Many my original mechanic has gotten a lot of things wrong lol.

Edited August 10, 2024 by silviaz

[Kinkstaah]

This is a car that should not be being driven around. Also, an untuned car running rich due to mods is... never a thing. Also, driving an untuned car long enough that you're inspecting the oil is all sorts of wrong.

You are speedrunning the Car-Darwin awards here dude.

I get it, you want to have fun and be cool in shiny toy.

 

[silviaz]

19 hours ago, Kinkstaah said:

This is a car that should not be being driven around. Also, an untuned car running rich due to mods is... never a thing. Also, driving an untuned car long enough that you're inspecting the oil is all sorts of wrong.

You are speedrunning the Car-Darwin awards here dude.

I get it, you want to have fun and be cool in shiny toy.

 

All valid. It's tuned but a poor tune lol. I'm only inspecting the oil because I did more pulls that usual as mentioned. If I don't do any pulls it stays clean for a decent amount of time, but I will get it fixed! It's just taking forever because everyone is busy.

Edited August 11, 2024 by silviaz

[Murray_Calavera]

9 minutes ago, silviaz said:

It's tuned but a poor tune lol.

and this

On 8/8/2024 at 3:58 PM, silviaz said:

i blow black smoke when i boost

Just don't add up for me. 

What is the go with the tuning on your car, who tuned it? Was it put on a dyno?

Also, I'm still waiting to find out what type of ECU and boost controller you have lol.

[silviaz]

3 hours ago, Murray_Calavera said:

and this

Just don't add up for me. 

What is the go with the tuning on your car, who tuned it? Was it put on a dyno?

Also, I'm still waiting to find out what type of ECU and boost controller you have lol.

That's the thing I have no idea who tuned it and not sure if it was dynoed, and is why I need to get it tuned because I don't have paperwork. In regards to the ecu, I checked that a while back and I couldn't find it lol, it is aftermarket though my last mechanic told me. Anyhow I'll just leave it for the tuner. 

[Murray_Calavera]

1 hour ago, silviaz said:

I have no idea who tuned it and not sure if it was dynoed

Ah ok. It would be a lot more accurate to simply say, the car has not been tuned. 

Blowing black smoke on boost is so crazy far from any state of 'tune' that I would not even call it poorly tuned. 

Do you know where the ECU lives? It takes about 10 seconds to access the ECU and we could solve this mystery.