Originally Posted By: weasley
Originally Posted By: edyvw
Every time you change formulation of oil you need to submit for testing
I know. This still doesn't mean that the OEM "drop" the oil, which was what was stated.
Originally Posted By: edyvw
Testing is actually very cheap.
No, it really is not. You can spend tens of thousands of dollars on one engine test. These programmes often require several engine tests (for example, just to get the ACEA A3/B4 spec that you need to underpin a LL-01 approval you need to run 8 engine tests, then BMW want a further three more) - if you are lucky (or good) you pass each one first time, but rarely is this the case. Test costs for a range of oils (because often an oil is developed as part of a platform) go into the $millions.
I worked on oil testing from idea to the point when it was sent to VW for approval. When company sent it for approval, VW returned approval and invoice for 3200 euros. I am talking about actual test of oil, NOT development.
So please....