johns Posted January 27, 2004 Share Posted January 27, 2004 Just phoned the garage you will be servicing my 7 on Thursday. They use Castrol RS oil as standard on 7's. Is that ok for my 1998 K Series Supersport engine (6000 miles) or must I insist on Mobil 1 or CC's Comma alternative 🤔 An replies before Thursday greatly appreciated. Lots of love John S (aka Klein) Link to comment Share on other sites More sharing options...
mav Posted January 27, 2004 Share Posted January 27, 2004 John, CC used to recommend the 5w/40 Fully Synth for the K series. They now rec. their own 5w/50 fully synth, but it is more expensive than Mobil 1 MS!! Link to comment Share on other sites More sharing options...
johns Posted January 28, 2004 Author Share Posted January 28, 2004 Ta Mav. Any one else got an opinion? regards John S Link to comment Share on other sites More sharing options...
Pelico Posted January 28, 2004 Share Posted January 28, 2004 Mine gets 0W40 Mobil 1. Don't understand the engineering behind it, but I think the hydraulic tappets need a thinner rather than thicker oil. My new Caterham owner's site Link to comment Share on other sites More sharing options...
prs Posted January 28, 2004 Share Posted January 28, 2004 Likewise, I use Mobil 1 Ow/40 never used anything else 1.6SS. It does actually state in the CC handbook to use this spec. Phil S7 SVN Link to comment Share on other sites More sharing options...
Nick Woods Posted January 28, 2004 Share Posted January 28, 2004 Quite a few people use Halford's 5/40 fully synthetic as its alleegdy the same as Comma synerG - and was on sale for £15 per 5l recently (it may still be but I havent looked recently)) Nick Red and Black 1.6K supersport Link to comment Share on other sites More sharing options...
warrent Posted January 28, 2004 Share Posted January 28, 2004 And the commer Synergy was allegedly old spec Mobil 1 🤔 Link to comment Share on other sites More sharing options...
Myles Posted January 28, 2004 Share Posted January 28, 2004 Yes - quite a few people (inc. me) use Halfrauds fully synth - there was a debate recently about it being a slightly different colour to the Comma stuff - but otherwise, the consensus does still seem to be that (take your pick) it *is* technically the same, or it's really close enough, or it meets the tech spec anyway... I tend to pick up loads whenever there is an offer on - and perform conservative oil changes as a result (even though I'm running a boggo 1.6 k-series 115bhp engine). Unfortunately, I'm pretty damned sure that the HF 'half price' offer of 15 quid ran out recently (4th Jan rings a bell)... ..but they quite often have a buy-one-second-is-half-price offer... Keep BC free and open for ALL. Membership No. 43xx Alcester Racing 7's Equipe - 🙆🏻™ Link to comment Share on other sites More sharing options...
John Howe Posted January 28, 2004 Share Posted January 28, 2004 John, for your normal use, try Halfraud own or Mobil 0/40. After all you are only talking about daily Winter driving, no the Rink! More to the point try a search on Blat Chat... its has all been said before JH Deliveries by Saffron, the yellow 222bhp Sausage delivery machine Link to comment Share on other sites More sharing options...
JP Posted January 29, 2004 Share Posted January 29, 2004 Castrol RS in mine - and no signs of disintegration of the foam baffle when I changed it at 16,000miles... Link to comment Share on other sites More sharing options...
dino ferrana Posted January 30, 2004 Share Posted January 30, 2004 Halfords oil is made by Comma but it is not Syner G or Syner Z in a different pack they are different oils (they have different additives). Mobil 1 normal is OK Syner Z is good and the Caterham branded stuff is very good and made specialyl for them. If you are doing track days then the high end protection could prove very useful. Don't use Mobil 1 Motorsport as the bottom number is too high and could cause trouble on cold starts with a K-Series. At the end of the day I put the Caterham oil in as it is designed for the engine! Link to comment Share on other sites More sharing options...
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