Good discussion of direct injection and carbon problems

GroundhogSS · 08-02-2022, 06:50 PM

I thought this was a pretty good look at the subject.

2broke4zl1 · 08-03-2022, 09:17 AM

all the more reason to go meth/water injection? im sure someone has already brought that up somewhere im still new here

Wyzz Kydd · 08-04-2022, 01:21 PM

So the new 0W-40 oil GM is now recommending may actually contribute more to carbon build up than the original 5W would.

FlukeSS · 08-04-2022, 01:49 PM

Quote:

Originally Posted by Wyzz Kydd

So the new 0W-40 oil GM is now recommending may actually contribute more to carbon build up than the original 5W would.

Soooo the engine was designed to well to work with 5w and they need more shit to break to get more parts for the 2023 and 2024's

Got it!

Serious question though, should we continue with 0Wrong-40?

To clarify my question: I run 0w-40 now, but should I or should I not especially based on the video above? I can switch I have np with switching, just want to make sure nothing is going to break if I do.

arpad_m · 08-04-2022, 01:59 PM

Oh, the propensity of any forum discussion morphing into yet another oil thread in such a lovely, almost quantum tunneling style flicker.

(I am running Amsoil Signature 10W-30, go figure

)

Wyzz Kydd · 08-04-2022, 02:39 PM

Quote:

Originally Posted by arpad_m

Oh, the propensity of any forum discussion morphing into yet another oil thread in such a lovely, almost quantum tunneling style flicker.

(I am running Amsoil Signature 10W-30, go figure

)

The video said oil volatility contributes to carbon build up and that lower weight oils are more volatile. It seems to me it's only natural to then ask the question of whether the newer, lower weight, higher volatility oil is the best choice after factoring in the higher potential for carbon build up. I

t may very well be a difference so small we might as well be talking about how many angels can dance on the head of a pin.

Waiting for the catch can crowd to chime in....

Spaceme1117 · 08-04-2022, 03:52 PM

As far as I am aware, carbon build up on the backs of the intake valves of the Gen V LT1 has never been a problem.

arpad_m · 08-04-2022, 04:24 PM

Quote:

Originally Posted by Wyzz Kydd

The video said oil volatility contributes to carbon build up and that lower weight oils are more volatile. It seems to me it's only natural to then ask the question of whether the newer, lower weight, higher volatility oil is the best choice after factoring in the higher potential for carbon build up. I

t may very well be a difference so small we might as well be talking about how many angels can dance on the head of a pin.

Waiting for the catch can crowd to chime in....

Some not particularly recent volatility data I've been able to find indicates 8.7-8.9% for the 0W-40 and 10.1% for the 5W-30, which means the difference is actually the other way around, 0W-40 is better from this point of view, although definitely not by an earth shattering margin.

ExxonMobil are very stingy with this information, especially for the 0W-40, so I'm not sure how reliable the sources I've found are.

The Amsoil 10W-30 I'm using has a published volatility of 4.1%.

mariojas · 08-04-2022, 05:39 PM

Wasn't ash content the most impactful? Dexos2 has it low, as far as I remember. Main reason to get it...

Elite Engineering · 08-04-2022, 05:48 PM

Most still are not up to date on the raw fuel dilution issues. This video does a great job of going over the top 3 causes of premature failure and damage. Best is the GM recommendation for track use as far as oil weight. Amsoil Signature Series or M1 5W50.

m6-lt1 · 08-05-2022, 09:05 AM

Quote:

Originally Posted by Spaceme1117

As far as I am aware, carbon build up on the backs of the intake valves of the Gen V LT1 has never been a problem.

This! Until we see actual examples of people having issues with their engine due to DI, I wouldn’t worry about it at all. These engines have now been out for 8 years and I have’t seen a single example of someone having DI issues. Remember the long block is exactly the same as the long blocks in the silverados, Yukons, etc and those cars really rack up miles.

FlukeSS · 08-05-2022, 10:12 AM

Quote:

Originally Posted by Elite Engineering

Most still are not up to date on the raw fuel dilution issues. This video does a great job of going over the top 3 causes of premature failure and damage. Best is the GM recommendation for track use as far as oil weight. Amsoil Signature Series or M1 5W50.

So I guess 1/4 mile runs fall in to the category of short trips?

I daily my car 60 miles per day so I should be ok then based on that video.

08-04-2022, 01:59 PM	#5
arpad_m Drives: 2018 Camaro 2SS A8 Join Date: Jul 2017 Location: East Tennessee Posts: 11,623 View My Garage	Oh, the propensity of any forum discussion morphing into yet another oil thread in such a lovely, almost quantum tunneling style flicker. (I am running Amsoil Signature 10W-30, go figure ) __________________ 2018 Camaro 2SS — G7E MX0 NPP F55 IO6 735 rwhp \| 665 rwtq Magnuson TVS 2300 80mm pulley \| Kooks 1 7/8" LT headers \| JRE smooth idle terminator cam \| LT4 FS & injectors \| TSP forged pistons & rods JMS PowerMAX \| DSX flex fuel kit \| Roto-Fab CAI \| Soler 95mm LT5 TB \| 1LE wheels \| 1LE brakes \| BMR rear cradle lockout \| JRE custom tune 1100 - 1/30/18 \| 2000 - 1/31/18 3000 - 2/06/18 TPW 2/26/18 3400 - 2/19/18 \| 3800 - 2/26/18 4300 - 2/27/18 \| 4B00 - 3/01/18 4200 - 3/05/18 \| 4800 - 3/14/18 5000 - 3/16/18 \| 6000 - 3/19/18

08-04-2022, 05:39 PM	#9
mariojas Drives: 2022 ZL1 M6 & 2023 Stinger GT AWD Join Date: Nov 2021 Location: Detroit Metro, MI Posts: 452	Wasn't ash content the most impactful? Dexos2 has it low, as far as I remember. Main reason to get it... __________________ 2023 Kia Stinger GT AWD - as a family car... 2022 ZL1, M6 as daddy's ass mover Charger sold! Better to sell, than waiting to be stolen...

08-03-2022, 09:17 AM	#2
2broke4zl1 Drives: 23 LT1 A10, 06 STI Join Date: Jul 2022 Location: ky Posts: 44	all the more reason to go meth/water injection? im sure someone has already brought that up somewhere im still new here

08-04-2022, 01:21 PM	#3
Wyzz Kydd Banned Drives: 2018 Camaro SS1 1LE Join Date: Feb 2017 Location: Georgia Posts: 1,595	So the new 0W-40 oil GM is now recommending may actually contribute more to carbon build up than the original 5W would.

08-04-2022, 03:52 PM	#7
Spaceme1117 Drives: 2017 Camaro SS, 2011 Corvette GS Join Date: Feb 2019 Location: Erlanger, Kentucky 41018 Posts: 815	As far as I am aware, carbon build up on the backs of the intake valves of the Gen V LT1 has never been a problem.

User Name		Remember Me?
Password