Originally Posted By: GeorgeWPAGA
What is a GFx oil?
Originally Posted By: Dyusik
For that use Supertech will do, but if you must, then LM. Eneos is a GFx oil, while LM is A3/B4 type, no science, just my personal preference.
GFx is one of ILSAC Spec used in NA: GF-4, GF-5. In my Mazda6 2005 I used ACEA A3/B3 5W-30 just from the first oil change with wonderful results. Typically Mazda pushes first for Mazda ACEA A5/B5 oil (Total/Elf) which is similar to GF-4/5 for viscosity (SAE and HT/HS), but more robust in additives package. However, it also allows A3/B3/4. Most of those who used Mazda oil experienced an oil consumption already to 100K km, but mine was still OK at 160K km.