Originally Posted By: SR5
Exactly ! I have a big problem (well a little OCD problem) with Valvoline Australia claiming ACEA A3/B4/C3 on some of their mid-SAPS oils. It's obviously a C3 oil that is suitable for A3/B4 applications with low sulphur fuel (or reasonable OCI) but it's not a real high-SAPS & high TBN A3/B4 oil.
Yes, there's a pretty big gulf between C3 and A3/B4 when it comes to SA. Certainly, there are those situations when you can interchange based upon fuel quality, as you mention. However, trying to be technically correct isn't being a troublemaker. As I mentioned in another thread recently, it's ironic how these tech lines are often staffed by the least technically competent people on staff, the ones who cannot engineer, design, formulate, run a network, turn a wrench, or handle a mop.