Make sure the crankcase is not overfilled. There should not be much
viscosity difference at normal temps between 5w-30 or 10w-30 but we know
better. Both are poor choices for any extended highway speed travel
regardless of outside temps. 20w-50 is good down to about 20F. Synthetic
15w-50 gets you below 0F. I've been experimenting with the Mobil 0w-40
synthetic with good results. This should be good to ~-20F or lower.

Dennis

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf
Of Mathieu Bertrand
Sent: Wednesday, November 02, 2005 8:29 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Oil buzzer with 5W30

I changed my oil last week with some 5w30 ( it's getting cold out here )
on my 87 transporter. Now every time I slow down, like comming out of
the highway, the oil buzzer comes on. Engine was rebuilt a year ago by
vw dealer ( before I bought the van ). The buzzer never came on before
this oil grade change, I usualy use 10W30 or 20W50 depending on
temperature. What should I suspect? Should I just change back to 10w30.
VW manual says it's OK to use 5w30 .

Thanks

Mathieu
86 weekender with 2.2L legacy engine
87 transporter