prs Posted February 25, 2003 Share Posted February 25, 2003 Which oil is the best to go for, I use my car for road use only. I have been using 0-40 but as I'm about to change the sump baffle thought I would sound out opinion on this first. Have seen threads saying that mixing the oils can cause premature break-up of the foam baffle. Phil Link to comment Share on other sites More sharing options...
Peter Carmichael Posted February 25, 2003 Share Posted February 25, 2003 Which engine? If K-series, stick with the 0W40 and this is important. The engine is designed for 30 or 40 weight oil. 50 is worse. It is a less good oil for the purposes of lubricating a k-series engine. 0W or 5W is the cold characteristic. Both are acceptable. The foam baffle is surrounded by controversy. My current view is: - it doesn't do anything apart from help remove aeration - if you have an Apollo tank you could risk not refitting it and forget all worries about foam break up - the breakup mechanism is probably related to the oil getting really hot - which it will do on a motorway blast or on trackdays; bulk oil temps of 120 degrees happen and are out of design parameters for practically everything from head gasket to bearings. - best thing to do is fit a laminova oil cooler. Link to comment Share on other sites More sharing options...
prs Posted February 25, 2003 Author Share Posted February 25, 2003 Cheers Peter, it's a 1.6SS have also just modified the oil pump as per your spec on DA's site and I'm about to fit an Apollo, will stick to Mobil 1 0W-40 then. Phil Link to comment Share on other sites More sharing options...
dino ferrana Posted February 25, 2003 Share Posted February 25, 2003 Caterham have launched a new oil for the K-Series with Comma. I believe that this is 5W-50? Parts can get it for you. Comma is part of the same company as Mobil Link to comment Share on other sites More sharing options...
Chris W Posted February 25, 2003 Share Posted February 25, 2003 I asked the same question, about which oil, yesterday when my SV 1.8K 140hp had its 500 mile service (BTW - yippee, they told me I can now open it up throttle-wise). Simon Lambert told me to use Comma Syner-Z Synthetic 0w-40 for road use, which is actually the same oil specified in my handbook. 1.8K SV 140hp see it here Edited by - Chris W on 25 Feb 2003 20:18:02 Link to comment Share on other sites More sharing options...
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