boxcorsair Posted January 29, 2010 Share Posted January 29, 2010 Hi allThis might be a bit of a non-issue, but I am of to grab various oils and lubes this weekend for engine, gearbox, trunnions etc. I have all the recommended types from the workshop manual, however the majority of local shops, a least, appear to be selling synthetic alternatives.Is there any difference in operation? Is there any impact of the grade/type.. e.g. is EP90 the same regardless?Cheers all Link to comment Share on other sites More sharing options...
Doug Paterson Posted January 29, 2010 Share Posted January 29, 2010 EP90 is definitely not the same regardless.You don't want to put GL5 spec EP90 in our cars - only GL4Although I understand that there are now some GL5 spec oils which are safe to use you must check they won't degrade the bronze phosphorous (?) metals in our diffs & boxesGL5 is readily found - GL4 is not so easy. Mail order / internet seems best source. Link to comment Share on other sites More sharing options...
willcolumbine Posted January 29, 2010 Share Posted January 29, 2010 You can get GL4 from Halfords. It is clearly marked on the front of the bottle and should do the trick for gearbox and diff. As for the engine, I have always used 20/50 from Duckhams, Millers or Halfords. I have heard it said that once run in a Spit can use a synthetic like Mobil1 but it's not something I've tried! Link to comment Share on other sites More sharing options...
Doug Paterson Posted January 29, 2010 Share Posted January 29, 2010 You can get GL4 EP80/90 at Halfords - which is good enough really.I've never seen GL4 EP90 in there tho - keep looking hopefully mind.....I'm using Valvoline Racing VR1 20W50 in the engine. Great Stuff. Link to comment Share on other sites More sharing options...
boxcorsair Posted January 29, 2010 Author Share Posted January 29, 2010 Thanks all. I'll have a look in Halfords tomorrow - got to pick up some other bits ad bobs. Found this place on line... seems ok. £16 for 5L. http://www.supplyshed.biz/gearoils.html Link to comment Share on other sites More sharing options...
Doug Paterson Posted January 29, 2010 Share Posted January 29, 2010 boxcorsair wrote:Thanks all. I'll have a look in Halfords tomorrow - got to pick up some other bits ad bobs. Found this place on line... seems ok. £16 for 5L. http://www.supplyshed.biz/gearoils.htmlGood find. That's a good price for GL4 EP90. Never heard of the brand but will give it a look. Link to comment Share on other sites More sharing options...
Fizzy Posted February 1, 2010 Share Posted February 1, 2010 yesterday i picked up some comma GL4 ep80 fom my local wilkinson's of all places. was about 2-3 quid for a litre. Link to comment Share on other sites More sharing options...
rotoflex Posted February 3, 2010 Share Posted February 3, 2010 I tried Mobil1 synthetic oil in my GT6 and it found its way out through places regular oil never had before! So I switched back.This was back when Mobil1 first came out, though, it may have changed. Link to comment Share on other sites More sharing options...
drofgum Posted February 3, 2010 Share Posted February 3, 2010 I have had similar experiences to Rotoflex's using Amsoil products in both the engine and the gearbox. I stopped using them and the leakage abated. The car still marks its territory, but nowhere near as much or as expensively. YMMV. Cheers, Paul Link to comment Share on other sites More sharing options...
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