Hi All

Will a change from one brand of oil to another cause a drop in power of the vehicle. i have a 1997 discovery 300tdi. I used BP C6 classic initially and then went to Caltex Delo 500. I felt a slight drop in power. Any thoughts?

Thanks
Suveer

 

Delo is a good oil. You may experience a little blow by when you first change over, but it will smooth out and be better than ever in about 500 miles. Loos of power shouldn't be from the oil.

Where

 

Unless you changed the weight to a heaver oil it will not change
anything. from a 5w40 say to a 15w40.

 

Thanks guys. much appreciated