Motor oil in gearbox?

1. chrome233 L-plater Joined: Jul 2011 Leigh, Lancashire Posts: 56 16v'ed 03 VTR

   #1 23rd August 2012, 18:52

   i have some 10w/40 engine oil and was wondering what would it do if i put it in my gearbox
2. DanTvts Established Member Joined: Mar 2011 Torbay Posts: 1285 Mauritius Vts, 206 Gti 180

   #2 23rd August 2012, 19:03

   It would not do much good is what it would do.
   Go and get some Total 75w80 from Citroen, £10 for the 2 litres needed last time i went.
3. user_57064 Established Member Joined: Jan 2012 south essex!! Posts: 2442 posi blue vtrs race car

   #3 23rd August 2012, 19:13

   It will wreck the box!
4. Gordzilla Established Member Joined: Mar 2007 Edinburgh Posts: 2369

   #4 23rd August 2012, 20:44

   Quote:

   Originally Posted by chrome233 i have some 10w/40 engine oil and was wondering what would it do if i put it in my gearbox

   There's a clue.
5. LSOfreak Saxperience Addict Joined: Jan 2008 west london Posts: 13810

   #5 24th August 2012, 00:46

   why not just use proper oil?
6. Gandi699 Saxperience Post Whore Joined: Apr 2011 Posts: 9100 Amazon green VTR 16v, Inferno RS clio 182

   #6 24th August 2012, 00:55

   Just to throw a spanner in the works here.
   
   http://www.saxperience.com/forum/sho...d.php?t=404256
   
   Personally I wouldn't do it though, get some decent 75w80 in there as to specs
7. user_57939 Infrequent Poster Joined: Mar 2012 Posts: 129

   #7 24th August 2012, 02:33

   Lost of brands have lost of diff ideas and spec. For the sake of a few quid why not just change it to the right stuff. Safer
8. Baz Saxperience Hardcore! Joined: Nov 2005 Coventry Posts: 17782 Fiesta ST150

   #8 24th August 2012, 02:43

   funny suggestion.....but a shit one at that lol, gearbox oil is pretty cheap tbh, i'd rather pay £10 than whatever it may cost for the repairs/cost of a new box!!
9. vplehto Newbie Joined: Sep 2016 Helsinki / Finland Posts: 19 A lots of, e.g. Saxo 1.6 VTS

   #9 1st September 2016, 08:35

   I've used and suggested to use expensive redline gear oil in rallycar gearbox. Though have used also standard api4 75-90. If it is standard use, probably it would work some time without much issues, but it is still wrong oil.
10. Phaeton Regular Poster Joined: Aug 2015 Sunny Worksop Posts: 441 1989 MK1 MR2 with V6 3.0L Camry engine

    #10 1st September 2016, 10:08

    Have you ever smelt gearbox oil & compared the smell with engine oil?
    
    There are many additives to gearbox oil that makes it more sticky not just how thick it is, it gets thrown around all the gears & is designed to stay there rather than just dropping off like engine oil would.
    
    But here is also a logic that some oil of the wrong specification is better than no oil at all, so if at 2am in the morning, I had lost all my gearbox oil, I'm 20 miles from home & the only oil I have available is 20/50 engine oil, I'd put it in to get home, then drain & refill with correct stuff later.
11. user_98505 Regular Poster Joined: Sep 2015 Posts: 269 106 Rallye

    #11 1st September 2016, 10:20

    Mini's share the engine oil with the gearbox. Personally I'd like to keep my 20CB90 box in decent shape so I run Millers CRX NT 75w90.