|GM / Vauxhall / Opel
GM have had oil standards for engine oils and gear oils for some time, covering most cars sold under the Vauxhall and Opel brands plus - worldwide - Buick, Cadillac, Chevrolet, GM Daewoo, GMC, Holden, Hummer, Pontiac, Saturn and more recent Saab models. The most popular engine oil specifications are the GM LL-A-025 and LL-B-025 specifications plus the new dexos2™ specification. For gear oils, Dexron is GM's standard; oil manufacturers buy a licence to produce oil to the Dexron specification from GM. There is also a wide variety of different GM automatic transmission fluid specifications. Opie Oils sells oils manufactured to the GM oil specifications; Opie Oils is not a licensed GM dealer or repair...
|GM - Engine Oil
Engine oils meeting the General Motors / Vauxhall / Opel engine oils specifications are listed here, available to buy online from Opie Oils for retail and trade purchase with delivery to your home, workplace or workshop.
|GM - Gear Oil & ATF's
Gear oil and automatic transmission fluids meeting the various GM gear oil and ATF specifications are listed below under their respective standard numbers. DEXRON® is GM's main ATF standard; oil manufacturers buy a licence to produce oil to the DEXRON®- specification from GM. DEXRON®-VI is the current and only official standard; earlier DEXRON® standards are no longer licensed by GM and therefore not regulated by them in any way.