The mythical 0W-40 Dexos2 - Page 11

Ventmaster · 08-27-2019, 05:05 PM

Just a FYI- I ordered the cheaper cap. Decided I wasn't gonna pay $22 more for one that said DEXOS, but that's the one I got

Might happen again... do you feel lucky?

MrcamaroZ28 · 10-02-2019, 02:03 PM

Quote:

Originally Posted by Gunmetalmissle

5W-30 dexos1 = street (not enough protection for track use)
5W-40 dexos2 = track (long term street use possibly harmful to cats?)
0w-40 dexos2 = both (new for 2019 but retro to earlier years, hard to find so far)

How is 5W40 harmful to cats verses other weights?

Laststandard · 10-02-2019, 02:56 PM

Quote:

Originally Posted by MrcamaroZ28

How is 5W40 harmful to cats verses other weights?

It's not. I've been running 5w-40 Valvoline Dexos2 since the first oil change.

Whocares05050 · 10-02-2019, 08:53 PM

Quote:

Originally Posted by MrcamaroZ28

How is 5W40 harmful to cats verses other weights?

Even if it were cat converters are covered for 8 yrs / 80k miles regardless lol

cdrptrks · 10-03-2019, 01:35 AM

Quote:

Originally Posted by Laststandard

It's not. I've been running 5w-40 Valvoline Dexos2 since the first oil change.

Quote:

Originally Posted by MrcamaroZ28

How is 5W40 harmful to cats verses other weights?

The benefit of 0W-X vs. 5W-X is supposed to be less engine wear during startup and the first few minutes while the engine warms up.

trohde78 · 10-03-2019, 10:18 AM

Quote:

Originally Posted by Whocares05050

Even if it were cat converters are covered for 8 yrs / 80k miles regardless lol

Excellent point! Although, the assumption would be that you are slowly losing performance and MPG as they clog over time.

BlueinTN · 10-04-2019, 11:00 AM

Quote:

Originally Posted by trohde78

Excellent point! Although, the assumption would be that you are slowly losing performance and MPG as they clog over time.

Or.... the other argument is you the owner damaged your own cats by putting in oil that was not recommended for long term use.

kropscamaro16 · 10-04-2019, 11:05 AM

i havent even bothered lol switched to 5w40 torco sr1 and never looked back

trohde78 · 10-04-2019, 02:59 PM

Quote:

Originally Posted by BlueinTN

Or.... the other argument is you the owner damaged your own cats by putting in oil that was not recommended for long term use.

Perhaps, but with the 5W-40 being Dexos 2 certified, how is it any different than being able to use a Dexos 2 certified 5W-30, or 0W-40? I get lost there. The only thing that might make sense is that the Valvoline 5W-40 MST wasn't Dexos certified when the new LT1 came out.

69-SS396 · 10-05-2019, 03:28 PM

Until Mobil 1 0W-40 ESP (Dexos2) is readily available AND doesn't cost $10/qt, I'm sticking with Valvoline 5W-40 MST (Dexos2). Just picked up 10 quarts at NAPA on sale for $5.39/qt.

Hell, I may even go back and pick up another 10 before the sale ends. I don't expect M1 to be that cheap for a long while, if ever.

huiez · 10-05-2019, 05:57 PM

I got 2 6 qt. cases of the Mobil 1 0W-40 ESP online for 100.00 and with the Mobil 1 rebate (just ended I think) got 24.00 back so 6.30 a quart or so. Not too terrible.

69-SS396 · 10-06-2019, 06:56 AM

Quote:

Originally Posted by huiez

I got 2 6 qt. cases of the Mobil 1 0W-40 ESP online for 100.00 and with the Mobil 1 rebate (just ended I think) got 24.00 back so 6.30 a quart or so. Not too terrible.

I saw that deal at Speedway Motors. If the rebates ever come back I'll probably pick up 2 cases. Not a bad price.

trohde78 · 10-06-2019, 06:53 PM

Quote:

Originally Posted by 69-SS396

I saw that deal at Speedway Motors. If the rebates ever come back I'll probably pick up 2 cases. Not a bad price.

Speedway seems to have the best deal on this stuff. They even sent me a $25 discount coupon after I ordered the first 12 quarts, so I ordered 12 more and got the rebate and the discount.

Mcmillion · 11-11-2019, 12:05 PM

https://web.archive.org/web/20180207.../dexos-brand2/

They sell Castrol Edge 0w40 at walmart, but have not seen a bottle with the dexos 2 logo. Anyone know if this is a case where they didn't have the cert yet to put on the bottle, but the oil is the same?

OP mentioned this oil in the beginning of the thread, any updates.

Playing on the web, I found a UK Castrol Edge Titanium FST 0w40 that has the dexos 2 on the label, but does not show that spec on the castrol UK website either.

https://www.buycarparts.co.uk/castrol/9029838

https://www.castrol.com/en_gb/united...ab_0w-40-a3-b4

Had a little more time and compared the data sheets for the US oil and the UK oil and everything on the sheet matches.

08-27-2019, 05:05 PM	#141
Ventmaster Drives: 2017 1SS 6spd Join Date: Jan 2011 Location: Utah Posts: 2,862	Just a FYI- I ordered the cheaper cap. Decided I wasn't gonna pay $22 more for one that said DEXOS, but that's the one I got Might happen again... do you feel lucky? Last edited by Ventmaster; 08-27-2019 at 05:33 PM.

10-04-2019, 11:05 AM	#148
kropscamaro16 Drives: 2016 1ss camaro Join Date: Feb 2016 Location: 909 Posts: 9,812	i havent even bothered lol switched to 5w40 torco sr1 and never looked back __________________ 16 1SS NIGHTFALL GRAY METALLIC WITH NPP #BECAUSERACECAR #SAVETHEMANUALS

11-11-2019, 12:05 PM	#154
Mcmillion Drives: 2018 ZL1 1998 SS 1992 Typhoon Join Date: Nov 2015 Location: RR Posts: 262	https://web.archive.org/web/20180207.../dexos-brand2/ They sell Castrol Edge 0w40 at walmart, but have not seen a bottle with the dexos 2 logo. Anyone know if this is a case where they didn't have the cert yet to put on the bottle, but the oil is the same? OP mentioned this oil in the beginning of the thread, any updates. Playing on the web, I found a UK Castrol Edge Titanium FST 0w40 that has the dexos 2 on the label, but does not show that spec on the castrol UK website either. https://www.buycarparts.co.uk/castrol/9029838 https://www.castrol.com/en_gb/united...ab_0w-40-a3-b4 Had a little more time and compared the data sheets for the US oil and the UK oil and everything on the sheet matches. Last edited by Mcmillion; 11-12-2019 at 06:14 PM.

10-05-2019, 03:28 PM	#150
69-SS396 Drives: 2018 2SS 1LE Join Date: May 2017 Location: Richmond Posts: 61	Until Mobil 1 0W-40 ESP (Dexos2) is readily available AND doesn't cost $10/qt, I'm sticking with Valvoline 5W-40 MST (Dexos2). Just picked up 10 quarts at NAPA on sale for $5.39/qt. Hell, I may even go back and pick up another 10 before the sale ends. I don't expect M1 to be that cheap for a long while, if ever.

10-05-2019, 05:57 PM	#151
huiez Drives: 2019 1SS M6 NPP Join Date: Jun 2019 Location: Central Arkansas Posts: 23	I got 2 6 qt. cases of the Mobil 1 0W-40 ESP online for 100.00 and with the Mobil 1 rebate (just ended I think) got 24.00 back so 6.30 a quart or so. Not too terrible.

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