Correct - the French have been using 2 to 5% since 1992. Therefore, all OEM
(original manufacturers equipment) fuel filters in the European market are
compatible with even 100% biodiesel.
However, it has been found that a number of the cheaper after-market filters use
a less robust polymer to house the filter screen, leading to degradation in a
short space of time. You get what you pay for!
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