Hi David, you haven't mentioned what might be the reason for using BD ? is it with a view to economy or for moral reasons ?
If you have a source of BD cheaper than petroD then go for it, because you'll save more than any repair can cost.. There are plenty of stupid myths people believe that oil companies start and maintain that simply use more oil with no benefit whatsoever to the end user. turning your engine off at the lights, headlights on in the daytime, warming the car up for more than 30 seconds in the morning and complete paranoia about anything blood-free (not from iraq, like bd) are just some.
I would be astounded if they went to the trouble of making and using the engine seals from two different materials one for europe and one for australia, when it's cheaper and easier to just stick the same thing in every car because just the suggestion alone will have the same effect on the customer.
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