View Single Post
  #2  
Old 04-09-2013, 12:41 PM
Jeremy5848's Avatar
Jeremy5848 Jeremy5848 is offline
Registered Biodiesel User
 
Join Date: Mar 2006
Location: Sonoma Wine Country
Posts: 8,394
I'm not sure what effect you are seeing but it appears to be real. A friend recently tried some NAPA "house brand" diesel motor oil and had similar results -- engine definitely made more rattling sounds. I wonder if the less expensive oil doesn't cling to the moving parts as well, so there's less cushioning effect?

Jeremy
__________________

"Buster" in the '95

Our all-biodiesel family
1995 E300D (W124) . .239,000 miles My car
1996 E300D (W210) . .313,000 miles Wife's car
Santa Rosa population 170,685 (2012)
Total. . . . . . . . . . . . 722,685
"Oh lord won't you buy me a Mercedes Benz."
-- Janis Joplin, October 1, 1970
Reply With Quote