Originally Posted By: JCM35
How much different is gold bottle edge on shelf compared to gold bottle Castro edge sold at Mazda dealers? Edge professional.
Mazda carries Castrol OE Professional 0W20. It does not use the Ti additive. It is very robust compared to the retail product.
Originally Posted By: RamFan
From what I've been told, the 0w20 Castrol bulk that Mazda dealerships typically use is actually a blend, not a full synthetic.
0W20 Castrol GTX is a blend. The 5w20 GTX is a standard dino. My Mazda dealer uses 0W20 as their bulk oil and it is on the bulk tank. This information is avail on the Castrol website. Ed