My stock oil cooler on my 91 Westy had the gasket fail and so lost most of my oil not far from my home. I could see a trail of oil heading back up the road from where I came. The cooling part never failed. Had a local VW mechanic replace the gasket with no other problems after for about 25K miles since. Steven 91 Westy On Wed, Oct 25, 2017 at 9:27 AM, Carl Hansen <carl_hansen@ieee.org> wrote: > In all my years (decades) of VW ownership, starting with a '78 > Scirocco thru the current '03 EuroVan I have never had the stock > sandwich oil cooler fail. There's got to be more than a dozen models > represented in the mix. > > Ch > > > Date: Wed, 25 Oct 2017 06:27:25 +0000 > From: Todd Last <rubatoguy@COMCAST.NET> > Subject: Re: Oil heat exchanger fail.. more > > This style of heat exchange is common in many engines these days. I > had heard that they are to aid in engine warm up as well as cooling - > the main reason was to help meet tightened emission requirements. > > Todd > > ----- Original Message ----- > > From: "Dennis Haynes" <d23haynes57@HOTMAIL.COM> > To: vanagon@GERRY.VANAGON.COM > Sent: Tuesday, October 24, 2017 10:00:25 AM > Subject: Re: Oil heat exchanger fail.. more > > You are correct in the theory of operation for the cooler and how it > is plumbed. When I had a motor home with the Ford Triton V-10, the oil > cooler was fed from the lower radiator hose with a venture manifold. > Yes, the oil cooler feed and return went to the lower hose. No > radiator flow such as cold engine, no cooling for the oil. As flow > increased, cooler coolant from the radiator would be used to cool the > oil, not hot coolant from under the thermostat. > > As for warming the oil faster during warm except for short trips in > very cold weather there is little benefit. Fun Bus had the original > cooler removed and replaced with a thermostatically control oil to air > exchanger, placed in front of the radiator before its first oil > change. Just turned 321K last Saturday so no engine harm there. > > Dennis > |
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