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Okay so I Know our cars take moble 1 05w 40 but O Riley and Walmart only have European....and I read on another thread that's not good...so like wtf do I get than? 15 40 is for track only right?
Okay so I Know our cars take moble 1 05w 40 but O Riley and Walmart only have European....and I read on another thread that's not good...so like wtf do I get than? 15 40 is for track only right?
Okay so I Know our cars take moble 1 05w 40 but O Riley and Walmart only have European....and I read on another thread that's not good...so like wtf do I get than? 15 40 is for track only right?
per the above post- just order it online. That’s what most of us do. It’s too hard to find locally. Speedway has a package deal where the oil filter is essentially free.
For clarification, according to GM SB 18-NA-129, 0W40 is approved for both street and track use on the '14-19 MY C7s with LT1, LT4 and LT5 engines. The only model that requires 15W-50 for track use is the ZR1:
For clarification, according to GM SB 18-NA-129, 0W40 is approved for both street and track use on the '14-19 MY C7s with LT1, LT4 and LT5 engines. The only model that requires 15W-50 for track use is the ZR1:
One would think that, but we have a forum member that has been denied warranty coverage for an on-track blown engine because the 0W-40 Dexos2 was used instead of 15W-50. He owns a prior to 2019 model vehicle. You may want to review that thread as well as receive information in writing from GM that they will not deny warranty coverage for on-track issues for pre-2019 vehicles if the 0W-40 dexos2 oil is used. Otherwise, based on the story I've seen, I'd suggest using the 15W-50 for pre-2019 vehicles.
Here's the Mobil1 0w-40 you are looking for. 5w-30 is also ok, for pre 2019 models:
to everyone thank you for all the replies....O Riley says they can't even order it walmart does not carry it they both only have European so can someome tell me where I can buy it?
to everyone thank you for all the replies....O Riley says they can't even order it walmart does not carry it they both only have European so can someome tell me where I can buy it?
There is a link to speedway motors in post 7 above.
Dennis
For clarification, according to GM SB 18-NA-129, 0W40 is approved for both street and track use on the '14-19 MY C7s with LT1, LT4 and LT5 engines. The only model that requires 15W-50 for track use is the ZR1:
Thanks. Do you by happen to have a copy of the actual TSB from GM? Or anything in writing on GM letterhead? I would love to run 0W40 in my 2017 GS but am worried about an engine issue on track and GM denying my warranty claim due to the oiI I was using. I dont think a CF sticky from Tadge is enough.
One would think that, but we have a forum member that has been denied warranty coverage for an on-track blown engine because the 0W-40 Dexos2 was used instead of 15W-50. He owns a prior to 2019 model vehicle. You may want to review that thread as well as receive information in writing from GM that they will not deny warranty coverage for on-track issues for pre-2019 vehicles if the 0W-40 dexos2 oil is used. Otherwise, based on the story I've seen, I'd suggest using the 15W-50 for pre-2019 vehicles.
Thanks. Do you by happen to have a copy of the actual TSB from GM? Or anything in writing on GM letterhead? I would love to run 0W40 in my 2017 GS but am worried about an engine issue on track and GM denying my warranty claim due to the oiI I was using. I dont think a CF sticky from Tadge is enough.
TBS #18-NA-129 is included in my post# 4 above, page2.
Last edited by Kevin A Jones; Feb 8, 2021 at 07:58 PM.
That's kind of a tricky document. They strongly imply that 2014-2019 non-ZR1 C7s may use the 0W-40 Dexos2 on track, as use of the 15W-50 is not listed as a requirement as it is for the ZR1. However, it isn't stated plainly anywhere that I saw. If I'm on the jury, GM loses if they deny warranty coverage to a non-ZR1 C7 owner for using the 0W-40 Dexos2, that otherwise had an on-track failure covered by warranty. I hope that's how it works out.
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Oil type....
