I use this diesel fuel system cleaner to my Mercedes GLC250d every 10,000kms. Unlike petrol, diesel sold in Australia does not contain much cleaning agents (e.g. injector cleaner). Using this diesel …
Once-a-year (or twice-a-year) $39 Penrite HPR5 5W40 oil. I use this oil in all of my cars (Renault, Mercedes). It has MB spec 229.5 approved. If you buy this by May 23, 2020 with 20% Cashrewards …