DAKA
Well-known member
to be fair to Volvopaul I think he posted that 2-3 years ago, at that time there were very few boat engines that could take advantage of higher grade fuel.
Cummins-mercruiser D300, D320 had smart engine management systems.
The new Volvo D4 and D6 might now also be able to take advantage of the higher grade but at that time those engines were struggling to get out the marinas with teething problems the D12 can not take advantage of higher octane fuel.
The highest speed I got from my boat was with white road diesel and I think it was shell but that could be a fluke.
As a side issue re petrol, as far as I am aware the shell tankers come out of the same refinery as the Tescos lorries, however Tesco can also buy petrol from Holland that over produces Petrol, sometimes this petrol can be sold cheap as it starts to deteriorate after 3 months , not a problem if you use it in a car but not the stuff to leave in your outboard or boat for another 6 months.
Cummins-mercruiser D300, D320 had smart engine management systems.
The new Volvo D4 and D6 might now also be able to take advantage of the higher grade but at that time those engines were struggling to get out the marinas with teething problems the D12 can not take advantage of higher octane fuel.
The highest speed I got from my boat was with white road diesel and I think it was shell but that could be a fluke.
As a side issue re petrol, as far as I am aware the shell tankers come out of the same refinery as the Tescos lorries, however Tesco can also buy petrol from Holland that over produces Petrol, sometimes this petrol can be sold cheap as it starts to deteriorate after 3 months , not a problem if you use it in a car but not the stuff to leave in your outboard or boat for another 6 months.