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mmarges
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Ok, yesterday I got a call from my dealer regarding a warning not to use conventional oil in any 2011 model or this could void your warranty.
Basically, in 2010 the oil life monitoring system is scaled/calibrated to conventional oil. For all 2011 GM vehicles the oil life monitoring system is now scaled/calibrated to the longevity and quality of the new Dexros 1 specification oil which is basically a semi-synthetic blend. Therefore you can imagine that if you are using conventional oil in a 2011 and going by the oil life monitory system you are stretching it way to fare.
Below is a cut&paste of a bulletin my friend (GM mechanic) emailed me today...there was a little more to it in the document but could cut and past certain sections and graphics. See below. Wondering if anyone else knows anything more on this?
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• Owners of model year 2011 vehicles may be concerned about the availability of engine oil meeting the new dexos 1™ engine oil specification. This PI provides the necessary information as to what the vehicle owner or dealer service department should do if they need to add engine oil or change the engine oil in their new vehicle, until the availability of dexos 1™ engine oil becomes widespread.
For additional information refer to dexos 1™ Synthetic Blend Engine Oil Announcement - Customer Care and Aftersales Bulletin CCA10-129 (U.S.) or GMP2010-149 (Canada).
• GM has introduced the dexos 1™ engine oil specification because it offers several advantages over engine oils of previous specifications. These advantages include all of the following:
- A greater level of engine cleanliness.
- Additional wear protection.
- Improved aeration control.
- Improved corrosion protection.
- Increased fuel economy.
- Increased sludge control.
- dexos 1™ is backwards compatible to older vehicles and is a suitable oil for pre-2011 GM vehicles (excluding all vehicles equipped with Duramax™ diesel engines).
Recommendation/Instructions
• As the availability of dexos 1™ increases, GM highly recommends that owners switch to dexos 1™ as soon as is practical to conform with GM Powertrain warranty requirements.
• When dexos 1™ oil becomes available dealers should use their inventory of American Petroleum Institute (API) Certified for Gasoline Engines Starburst oils in vehicles that DO NOT require dexos 1™ oil.
• GM's acceptance of the use of substitute engine oils is temporary. The acceptability of non dexos 1™ engine oils will be discontinued when dexos 1™ oil availability is pervasive. GM recommends the following substitute engine oils as outlined per applicable vehicle:
Basically, in 2010 the oil life monitoring system is scaled/calibrated to conventional oil. For all 2011 GM vehicles the oil life monitoring system is now scaled/calibrated to the longevity and quality of the new Dexros 1 specification oil which is basically a semi-synthetic blend. Therefore you can imagine that if you are using conventional oil in a 2011 and going by the oil life monitory system you are stretching it way to fare.
Below is a cut&paste of a bulletin my friend (GM mechanic) emailed me today...there was a little more to it in the document but could cut and past certain sections and graphics. See below. Wondering if anyone else knows anything more on this?
---------------------------------------------------
• Owners of model year 2011 vehicles may be concerned about the availability of engine oil meeting the new dexos 1™ engine oil specification. This PI provides the necessary information as to what the vehicle owner or dealer service department should do if they need to add engine oil or change the engine oil in their new vehicle, until the availability of dexos 1™ engine oil becomes widespread.
For additional information refer to dexos 1™ Synthetic Blend Engine Oil Announcement - Customer Care and Aftersales Bulletin CCA10-129 (U.S.) or GMP2010-149 (Canada).
• GM has introduced the dexos 1™ engine oil specification because it offers several advantages over engine oils of previous specifications. These advantages include all of the following:
- A greater level of engine cleanliness.
- Additional wear protection.
- Improved aeration control.
- Improved corrosion protection.
- Increased fuel economy.
- Increased sludge control.
- dexos 1™ is backwards compatible to older vehicles and is a suitable oil for pre-2011 GM vehicles (excluding all vehicles equipped with Duramax™ diesel engines).
Recommendation/Instructions
• As the availability of dexos 1™ increases, GM highly recommends that owners switch to dexos 1™ as soon as is practical to conform with GM Powertrain warranty requirements.
• When dexos 1™ oil becomes available dealers should use their inventory of American Petroleum Institute (API) Certified for Gasoline Engines Starburst oils in vehicles that DO NOT require dexos 1™ oil.
• GM's acceptance of the use of substitute engine oils is temporary. The acceptability of non dexos 1™ engine oils will be discontinued when dexos 1™ oil availability is pervasive. GM recommends the following substitute engine oils as outlined per applicable vehicle: