Question Leaking oil cooler o-rings

[hheynow]

If my oil cooler o-rings are leaking where will I see it? What will it damage? I was told to change them since I'm well over 300K even though I don't think they're leaking. Is this wise preventative maintenance or fixing something that ain't broke? BTW, I don't even know where it's located.

 

[Patrick Feeley]

The oil cooler is the large tubular looking thing on the driver's side of the engine running forward from the oil filter. It is a tube/shell type cooler and is cooled by the engine coolant. The are two o-rings on each end of the "tube". They keep the oil from leaking out and also from leaking into the coolant. You would notice oil leaking from either header adapter where the tube goes in (one header at the front and the oil filter header that the filter screws on to) or oil in your coolant. For me, I'm in the "if it ain't broke don't fix it" camp. Cheers!

 

[BJS]

just keep an eye on the antifreeze and if you start seeing oil then you've likely found a leaking oil-antifreeze o-ring and you'll smell the antifreeze leak before you'll ever see the drops on the concrete.

Mine has been leaking antifreeze for a while now one of these days I'll fix it but I'm not too sure when.

 

[hheynow]

You mean droplets of oil floating in the degas bottle?