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850 / S70 & V70 '96-'99 / C70 '97-'05 General Forum for the 850 and P80-platform 70-series models |
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Redbrown looking residue at the bottom of the expansion tankViews : 942 Replies : 15Users Viewing This Thread : |
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I noticed there's a red/brown residue (I think) at the bottom my expansion tank. Car is a 1998 V70R. My initial thoughts were a blown head gasket. The coolant hasn't been dropping at all though.
I followed Robert DIY's advice on checking a bad head gasket via this link - https://www.youtube.com/watch?v=WXOHjePUWkU With the engine at operating temperature, I slowly and easily unscrewed the green expansion tank cap and coolant was not gushing out. The coolant behaved as expected with no bad head gasket (as shown in the video link). The first photo is with the engine cold.Cold engine.jpg The second photo is with the engine at operating temperature?At operating temperature.jpg Any thoughts what this red/brown residue could be please? PS: apologies for the images not being the right way round. |
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