Why are you replacing the hoses? I used to follow the standard advice that you should replace hoses every 4 years. Well, that was before I owned a Mercedes. My first Mercedes was a 1980 300SD that I bought in 2000. I noticed that to my amazement, it still had it's original hoses on. So, naturally I immediately bought replacements and changed them out. Well that was for nothing, because when the hoses dried out I looked inside and there wasn't a single thing wrong with them. No cracking, or weak spots, or dry rot. I now have a TD that is now 20 years old and it too has it's original hoses. Granted I check on them, but I don't have any plans to replace them unless it's needed. So, I regularly feel the hoses to check on their condition. It absolutely amazes people that the hoses are original.

__________________
1999 MB SL500 (110,000 mi)
2004 Volvo V70 2.5T (220,000 mi)
2014 Tesla Model S 85 (136,000 mi)
MBCA member