most EUI cars should be fine on biodiesel of all blends up to 100%

some older common rail and pump diesels can suffer with clogging and lacquering problems

best bet is to start at 50% to see if there is a noticeable performance drop as this can cause raised fuel consumption

when first using bio change the filters, and then after a few hundred change the filters again (fuel)

the solvent nature of the fuel cleans the tabk and lines and can lead to blocked filters and a lower fuel pressure, which can damage the engine