I have been using BG products for the past 20 years in all my vehicles, but mostly on my 83 Mercedes. It loves the diesel and oil additives. I can notice the performance decline if I forget to add BG DFC Plus®, PN 248, when filling with fuel. The oil additive makes a big difference in engine wear. My vehicle has over 300,000 miles, and it’s never had any engine problems. Thank goodness for BG products.