Didn't see an "Intro' on the forum so here is mine:
I'm an old school back yard hammer mechanic who grew up on early American and muscle cars. As I got smarter, switched to European. At 74 yrs old, I still wrench on my cars, but it's tough bending over and picking stuff up from the floor.
OK, my question for smart oil guys:
I've driven a number of Audi A8s both D2 and D3. Of note, my wife's old 1998 with 170,000 mile still runs good and does not have any cam timing chain rattle. I use conventional oil in it.
An earlier 2008 A8 rattled and I had the cam chain tensioner replaced. (not cheap job)
My current 2006 A8 did not rattle when I bought at 130,000 miles two years ago. Previous owner always used Audi oil. At first, I used Mobile One 5-W-40 (not 502 compatible) synthetic and I began to notice the rattle. I didn't really know about the 502 until some research and have since switched to Mob One 0 W-40 which is 501.
Since the weather got warm this year, the rattle is very noticeble (and embarrassing). Previous owner suggested I use something heavier like Castrol or Liquimolly 5-W-40 .
Any thoughts on this? Will the thicker oil build up pressure faster on start up and not rattle? Maybe I should put a can of STP "honey" in it. (just kidding).
I'm an old school back yard hammer mechanic who grew up on early American and muscle cars. As I got smarter, switched to European. At 74 yrs old, I still wrench on my cars, but it's tough bending over and picking stuff up from the floor.
OK, my question for smart oil guys:
I've driven a number of Audi A8s both D2 and D3. Of note, my wife's old 1998 with 170,000 mile still runs good and does not have any cam timing chain rattle. I use conventional oil in it.
An earlier 2008 A8 rattled and I had the cam chain tensioner replaced. (not cheap job)
My current 2006 A8 did not rattle when I bought at 130,000 miles two years ago. Previous owner always used Audi oil. At first, I used Mobile One 5-W-40 (not 502 compatible) synthetic and I began to notice the rattle. I didn't really know about the 502 until some research and have since switched to Mob One 0 W-40 which is 501.
Since the weather got warm this year, the rattle is very noticeble (and embarrassing). Previous owner suggested I use something heavier like Castrol or Liquimolly 5-W-40 .
Any thoughts on this? Will the thicker oil build up pressure faster on start up and not rattle? Maybe I should put a can of STP "honey" in it. (just kidding).