Originally Posted By: skyship
Just written to Castrol to find out what the difference is between the add packs of normal Edge 5/40 and Turbo Diesel Edge 5/40. The base stock looks the same, but for some odd reason Volvo and Castrol say use the normal one in my TDI. It might be related to the different Zinc levels, as the Diesel Edge is DPF approved, but that's only a guess.
The new Diesel version is much cheaper than the old 5/40 where I am for some odd reason and is even cheaper than LM Synthoil and M1 0/40.
Just got the reply from Castrol and it is good news:
Dear Mr --
Thank you for your email
Absolutely no problem using the EDGE Turbo Diesel 5W-40 where the EDGE 5W-40 is recommended – they are both compatible
Kind regards
Andy Griffin
Automotive Lubricants - UK & Ireland
Lubricants - Advanced Technical Support
So next but one UOA results will be the Brits vs the Germans, with the Liqui Moly Synthoil High Tech team against the best diesel team from Castrol. Volvo think the Castrol team will Edge out the LM one, but I have already rigged the result slightly against the Castrol boys by planning to change my dirty air filter.
Note: Castrol Edge TD is cheaper than the normal Edge and is on special from Fleabay.