Okay to use Valvoline 5w40 MST oil?

Pollock · 08-20-2018, 11:36 AM

Not wanting a heated argument. But I have roughly 30 quarts of Valvoline left I was going to use on my LT1. Bought it on sale. Will it be okay to run this on my LT4 on the street then track the car with Mobil 1 15W50? I hate switching brands of oil for some reason.

I will go to Mobil 1 only after the Valvoline is gone.

greaser2 · 08-20-2018, 11:53 AM

It’s dexos 2 so ur good. You can even use on track. It’s basically the same as M1 ESP 5W-40.

Stephen12ZL1 · 08-20-2018, 04:15 PM

yep...Valvoline MST 5w40 is Dexos 2 approved and acceptable for our ZL1s. The Mobil 1 0w40 ESP is the "new" standard for the LT4. I saw no difference between the 2 at VIR concerning oil temps or consumption. So, I feel confident using either and the Valvoline MST 5w40 is quite a bit cheaper. At NAPA they have it for less than $6 a qt!

Pollock · 08-20-2018, 06:17 PM

I like to stick with one oil manufacturer. Or does it matter.

I thought the 1LE had to have mobile 15w50 for the track even though I dont understand why when the regular zl1 can use 0w40 and 5w40. Same engine.

waterman · 08-20-2018, 06:33 PM

"For the ZL1 1LE, 15W-50 is the required track oil due to the increased lateral acceleration capability of the vehicle. It has enough of a grip capacity increase above all the other models that the added protection from 15W-50 is needed. The thicker 50 weight viscosity helps with oil pan drawdown when the oil gets hot on the track and reduces risk of pressure dropouts. For the ZL1, 15w-50 will add protection but is not required, as the 0w-40 was tested and provides adequate protection in a track environment.

Since Mobil 1 15w50 is not Dexos-certified, it is not recommended for long-term street driving use. Follow the Owner’s Manual and switch back to the 0W-40 Dexos-certified oil after your track session is over and you are back to street use.
With regard to the new Mobil 1 0W-40 ESP Dexos 2 oil, it is an acceptable oil for both the street and track, for the SS, SS 1LE, and the ZL1 due to having less aeration. However, it is not recommended for tracking your ZL1 1LE."

Per Al Oppenheiser.

Valvoline MST (Dexos) is fine for street application.

Pollock · 08-20-2018, 07:27 PM

Okay that makes sense. Thanks for the detailed explanation.

Badmojo · 08-20-2018, 08:25 PM

I'm running this on the street and track. My Blackstone Labs oil reports have been almost perfect with the Fram XG10060.

Badmojo · 08-20-2018, 08:31 PM

Quote:

Originally Posted by Badmojo

I'm running this on the street and track. My Blackstone Labs oil reports have been almost perfect with the Fram XG10060.

5 track days and 1300 miles (280 on track).

Sent from my iPhone using Tapatalk Pro

Pollock · 08-20-2018, 08:32 PM

I called my dealer today about Mobil 1 0w40. They said it was 15 dollars a quart and it's on back order. Might take months to get in. Lol.

I will stick with the valvoline 5w40 then track with Mobil 15w50 so GM cant say I did something wrong incase I have problems. Thanks.

Badmojo · 08-20-2018, 08:35 PM

Quote:

Originally Posted by Pollock

I called my dealer today about Mobil 1 0w40. They said it was 15 dollars a quart and it's on back order. Might take months to get in. Lol.

I will stick with the valvoline 5w40 then track with Mobil 15w50 so GM cant say I did something wrong incase I have problems. Thanks.

Valvoline MST 5W40 is fine for the track. See above and it is in the high performance supplement.

Gunmetalmissle · 08-20-2018, 08:35 PM

5W-40 valvoline is not the same as the new 0W-40 mobil 1. There is a reason they tell you to switch back to 5W-30 in the manual after a track day. 5W-40 is not as catalytic converter friendly. There is a reason they developed a whole new oil and the advice in the owner’s manual.

Pollock · 08-20-2018, 08:37 PM

Quote:

Originally Posted by Badmojo

Valvoline MST 5W40 is fine for the track. See above and it is in the high performance supplement.

Correct me if I am wrong but it's okay for the standard ZL1 but the ZLE they say only 15w50 for track.

Pollock · 08-20-2018, 08:40 PM

Quote:

Originally Posted by Gunmetalmissle

5W-40 valvoline is not the same as the new 0W-40 mobil 1. There is a reason they tell you to switch back to 5W-30 in the manual after a track day. 5W-40 is not as catalytic converter friendly. There is a reason they developed a whole new oil and the advice in the owner’s manual.

The way I interpret the manual 5w40 valvoline is okay to leave in after the track. And you are correct it is harder on the cats.

Badmojo · 08-20-2018, 09:03 PM

Quote:

Originally Posted by Pollock

Correct me if I am wrong but it's okay for the standard ZL1 but the ZLE they say only 15w50 for track.

The engines are identical. 1.39 Max G per the PDR.

08-20-2018, 11:36 AM	#1
Pollock LT4 M6 Drives: 2018 ZL1 1LE Join Date: Nov 2010 Location: Bloomington, IN Posts: 1,249	Okay to use Valvoline 5w40 MST oil? Not wanting a heated argument. But I have roughly 30 quarts of Valvoline left I was going to use on my LT1. Bought it on sale. Will it be okay to run this on my LT4 on the street then track the car with Mobil 1 15W50? I hate switching brands of oil for some reason. I will go to Mobil 1 only after the Valvoline is gone.

08-20-2018, 04:15 PM	#3
Stephen12ZL1 Drives: '21 ZLE A10 Join Date: May 2012 Location: Mechanicsville, VA Posts: 6,824	yep...Valvoline MST 5w40 is Dexos 2 approved and acceptable for our ZL1s. The Mobil 1 0w40 ESP is the "new" standard for the LT4. I saw no difference between the 2 at VIR concerning oil temps or consumption. So, I feel confident using either and the Valvoline MST 5w40 is quite a bit cheaper. At NAPA they have it for less than $6 a qt! __________________ '21 ZLE A10 Wild Cherry PDR 2:00.78 VIR Full 10.68@131.69 1.68 60' '17 ZL1 A10 Mosaic Black PDR/Nav 2:03.08 VIR Full 11.003@129.2 1.75 (sold) '15 Z/28 #325 Black a/c & stereo. 2:10.1 VIR Full (sold) '12 ZL1 A6 Black 10.52@131 1.55 60' 2:13 VIR Full (sold)

08-20-2018, 06:33 PM	#5
waterman Drives: Grandad's C2 L89 Join Date: May 2017 Location: 2051.50N 15629.60W Posts: 1,711	"For the ZL1 1LE, 15W-50 is the required track oil due to the increased lateral acceleration capability of the vehicle. It has enough of a grip capacity increase above all the other models that the added protection from 15W-50 is needed. The thicker 50 weight viscosity helps with oil pan drawdown when the oil gets hot on the track and reduces risk of pressure dropouts. For the ZL1, 15w-50 will add protection but is not required, as the 0w-40 was tested and provides adequate protection in a track environment. Since Mobil 1 15w50 is not Dexos-certified, it is not recommended for long-term street driving use. Follow the Owner’s Manual and switch back to the 0W-40 Dexos-certified oil after your track session is over and you are back to street use. With regard to the new Mobil 1 0W-40 ESP Dexos 2 oil, it is an acceptable oil for both the street and track, for the SS, SS 1LE, and the ZL1 due to having less aeration. However, it is not recommended for tracking your ZL1 1LE." Per Al Oppenheiser. Valvoline MST (Dexos) is fine for street application. __________________ 2018 ZL1 1LE sw/PDR

08-20-2018, 08:25 PM	#7
Badmojo aka BeastZL1 Drives: 2019 Camaro ZL1 1LE, 2004 Cobra Join Date: Dec 2017 Location: NC Posts: 1,136	I'm running this on the street and track. My Blackstone Labs oil reports have been almost perfect with the Fram XG10060. __________________ 2019 Camaro ZL1 1LE Racing for ALS Youtube Link

08-20-2018, 11:53 AM	#2
greaser2 Drives: 2017 A10 ZL1 KG Join Date: Oct 2014 Location: Porter TX Posts: 315	It’s dexos 2 so ur good. You can even use on track. It’s basically the same as M1 ESP 5W-40.

08-20-2018, 06:17 PM	#4
Pollock LT4 M6 Drives: 2018 ZL1 1LE Join Date: Nov 2010 Location: Bloomington, IN Posts: 1,249	I like to stick with one oil manufacturer. Or does it matter. I thought the 1LE had to have mobile 15w50 for the track even though I dont understand why when the regular zl1 can use 0w40 and 5w40. Same engine.

08-20-2018, 07:27 PM	#6
Pollock LT4 M6 Drives: 2018 ZL1 1LE Join Date: Nov 2010 Location: Bloomington, IN Posts: 1,249	Okay that makes sense. Thanks for the detailed explanation.

08-20-2018, 08:32 PM	#9
Pollock LT4 M6 Drives: 2018 ZL1 1LE Join Date: Nov 2010 Location: Bloomington, IN Posts: 1,249	I called my dealer today about Mobil 1 0w40. They said it was 15 dollars a quart and it's on back order. Might take months to get in. Lol. I will stick with the valvoline 5w40 then track with Mobil 15w50 so GM cant say I did something wrong incase I have problems. Thanks.

08-20-2018, 08:35 PM	#11
Gunmetalmissle Drives: 16 ngm ss Join Date: Jan 2017 Location: NJ Posts: 233	5W-40 valvoline is not the same as the new 0W-40 mobil 1. There is a reason they tell you to switch back to 5W-30 in the manual after a track day. 5W-40 is not as catalytic converter friendly. There is a reason they developed a whole new oil and the advice in the owner’s manual.

User Name		Remember Me?
Password