What is the nikasil everyone talk about, is my E34 affected?
The nikasil cylinder degradation comes from a high content of “sulfur” in the gas, not sodium. The sulfur content in fuel on the west coast is very low and should not pose a problem. Some owners on the west coast have had no problems for over 100k MI on their 530i and 540i. The engine has a warranty extension up to 100k MI because of the material selection and possible problems.
