- Joined
- Feb 2, 2023
- Messages
- 46
Hello everyone! Long time lurker here but I finally made an account to ask my own question.
I have a 2016 Cadillac CTS-V with the LT4. GM spec calls for a Dexos 2 approved oil and recommends the Mobil 1 synthetic 0w40 ESP which has recently been relabeled “supercar”. I’ve been running this oil thus far per factory recommendation. I ran the same on my modified C7 Z06 I just recently sold.
The “ESP” stands for “Emissions Systems Protection”.
My question is… With emissions equipment removed, is there any longer a necessity to run the Dexos 2 spec?
My understanding from my research is… Dexos 2 calls for an ash level equal to or less than .8 (as protective measure for emissions equipment).
Is there other reason beyond that as to why the Dexos 2 approval would be required on the DI engine?
Reason I ask… my car is heavily modified with Heads/cam/Whipple, full bolt ons, etc. Emissions equipment is no longer a concern. I also live in Houston, TX where summer temps get higher than most. Considering my car sees some spirited driving and I do frequent oil changes at approx 2k mile intervals due to using E85 and meth, I have been contemplating the switch over to Rotella T6 5w40 or something similar that’s a slight bit heavier and more readily available.
Anyone see an issue with that? I assume the T6 will have a higher HTHS strength and likely higher zinc content as well. The T6 has a 1.0 or lower sulfated ash level. That’s only a .2 difference. It’s also pretty convenient that it can be purchased at Walmart at a cheap price. If emissions are the only purpose for the Dexos 2 requirement, I’d imagine at this point, I should be able to use any good quality oil I want. Just looking for the best protection vs a strictly emissions focused oil as that no longer matters on this vehicle.
I figured this would be the best place to ask this question. Looking for someone with some expertise that can look past the owners manual considering it to be gospel. I asked this question on a facebook V page and a couple people said it would be just fine but… most of the others seem to be anti anything that’s not recommended by GM and they think the car will implode if you use anything aside from the recommended Mobil 1 0w40 ESP.
Let me know your thoughts. Thanks in advance!
I have a 2016 Cadillac CTS-V with the LT4. GM spec calls for a Dexos 2 approved oil and recommends the Mobil 1 synthetic 0w40 ESP which has recently been relabeled “supercar”. I’ve been running this oil thus far per factory recommendation. I ran the same on my modified C7 Z06 I just recently sold.
The “ESP” stands for “Emissions Systems Protection”.
My question is… With emissions equipment removed, is there any longer a necessity to run the Dexos 2 spec?
My understanding from my research is… Dexos 2 calls for an ash level equal to or less than .8 (as protective measure for emissions equipment).
Is there other reason beyond that as to why the Dexos 2 approval would be required on the DI engine?
Reason I ask… my car is heavily modified with Heads/cam/Whipple, full bolt ons, etc. Emissions equipment is no longer a concern. I also live in Houston, TX where summer temps get higher than most. Considering my car sees some spirited driving and I do frequent oil changes at approx 2k mile intervals due to using E85 and meth, I have been contemplating the switch over to Rotella T6 5w40 or something similar that’s a slight bit heavier and more readily available.
Anyone see an issue with that? I assume the T6 will have a higher HTHS strength and likely higher zinc content as well. The T6 has a 1.0 or lower sulfated ash level. That’s only a .2 difference. It’s also pretty convenient that it can be purchased at Walmart at a cheap price. If emissions are the only purpose for the Dexos 2 requirement, I’d imagine at this point, I should be able to use any good quality oil I want. Just looking for the best protection vs a strictly emissions focused oil as that no longer matters on this vehicle.
I figured this would be the best place to ask this question. Looking for someone with some expertise that can look past the owners manual considering it to be gospel. I asked this question on a facebook V page and a couple people said it would be just fine but… most of the others seem to be anti anything that’s not recommended by GM and they think the car will implode if you use anything aside from the recommended Mobil 1 0w40 ESP.
Let me know your thoughts. Thanks in advance!