Red Rimshot Posted April 12, 2020 Share Posted April 12, 2020 Hello, Another Flea question, sorry. I have some Castrol D140 oil. This is used in the welbike clutch. It's very thick, almost like syrup. I was planning to mix this with grease to use in the Flea's gearbox. Whilst using 10/40w or the D140 in the clutch. Have I got it right ? What is the best stuff to use in each please ? Thanks all. Quote Link to comment Share on other sites More sharing options...
Richard Farrant Posted April 12, 2020 Share Posted April 12, 2020 2 hours ago, Red Rimshot said: Hello, Another Flea question, sorry. I have some Castrol D140 oil. This is used in the welbike clutch. It's very thick, almost like syrup. I was planning to mix this with grease to use in the Flea's gearbox. Whilst using 10/40w or the D140 in the clutch. Have I got it right ? What is the best stuff to use in each please ? Thanks all. Castrol D140 is a SAE140 gear oil, not familiar with the Flying Flea, but it seems a rather heavy oil for it. Quote Link to comment Share on other sites More sharing options...
Ron Posted April 13, 2020 Share Posted April 13, 2020 Richard is right. Gear oil is far to heavy for the primary cases. Both the Welbike and Flea maintenance manuals call for ordinary engine oil HD 50. But you should be able to use heavy gear oil (not EP) in the Flea gear box (The manual quotes oil C600) Maybe Richard can remind us of the modern equivalent! Ron Quote Link to comment Share on other sites More sharing options...
ltwtbarmy Posted April 13, 2020 Share Posted April 13, 2020 In Richard’s own words - Quote Link to comment Share on other sites More sharing options...
Ron Posted April 13, 2020 Share Posted April 13, 2020 OK thanks. So C600 oil is equivalent to SAE 140 gear oil.....I'll make a note for future reference.👍 Ron Quote Link to comment Share on other sites More sharing options...
Red Rimshot Posted April 13, 2020 Author Share Posted April 13, 2020 Hello again thanks for the replies. I've cross refd the Sae140 and now I'm a little confused (sorry). I have three 'areas' to lube. 1. Flea gearbox, 2. Flea clutch/prim drive and 3. Welbike clutch. So are we saying the Castrol D140 is ok in the Flea gearbox and the WB clutch ? The WB does drag a bit so I'd like to thin it down can I mix the D140 with some 10/40 ? Can I use 10/40 in the Flea clutch? Sorry again, and thanks. Quote Link to comment Share on other sites More sharing options...
Ron Posted April 13, 2020 Share Posted April 13, 2020 NO gear oil in the Welbike. Where did you get that information? The manual clearly states engine oil. 40 or 50 will do. Same for the Flea. But gear oil in the Flea gearbox. I'm sure Rob Van Meel will have the appropriate parts lists and manuals. http://robvanmeel.nl/ Quote Link to comment Share on other sites More sharing options...
Richard Farrant Posted April 13, 2020 Share Posted April 13, 2020 6 hours ago, Ron said: Richard is right. Gear oil is far to heavy for the primary cases. Both the Welbike and Flea maintenance manuals call for ordinary engine oil HD 50. But you should be able to use heavy gear oil (not EP) in the Flea gear box (The manual quotes oil C600) Maybe Richard can remind us of the modern equivalent! Ron Hi Ron, Going on what you say above, a Straight 50 engine oil is approx. the same viscosity as a Straight SAE90 gear oil. Be aware that SAE viscosity numbers do not align between engine and gear oils. C600 is a Straight 140 gear oil, I know this for sure as we used it in army workshops in certain applications, one being worm drive axles. Quote Link to comment Share on other sites More sharing options...
Ron Posted April 13, 2020 Share Posted April 13, 2020 Thanks Richard. I was the C600 that you'd clarified before but I'd forgotten the answer. Ron Quote Link to comment Share on other sites More sharing options...
jmyakovich Posted August 7, 2021 Share Posted August 7, 2021 (edited) Castrol "XL" ( listed in the welbike " operation manual ") Is in fact straight 30 oil, low detergent. They do also list Castrol "D" in the same manual for the gear box , unless it makes the clutch drag, then it is recommended that the " XL" oil is put in it. If you go here : https://classicoilsshop.co.uk/castrol-classic-xl30 , Castrol does in fact still manufacture the "XL" and the "D" , and it is sold in a few different places in the UK. Edited August 7, 2021 by jmyakovich mis information Quote Link to comment Share on other sites More sharing options...
welbike Posted August 12, 2021 Share Posted August 12, 2021 (edited) Here's the old versus "new" oil nomenclature, to comply with US vehicles in service in the British Army. Not much use with the C600, sorry! Lex Edited August 12, 2021 by welbike additional info Quote Link to comment Share on other sites More sharing options...
Ron Posted August 12, 2021 Share Posted August 12, 2021 As already confirmed in previous posts by Richard Farrant (Ex REME) C600 is straight 140 gear oil. Ron 1 Quote Link to comment Share on other sites More sharing options...
jmyakovich Posted August 12, 2021 Share Posted August 12, 2021 Didnt meant to cause any commotion, just happened upon information that I though t might be helpful....... Quote Link to comment Share on other sites More sharing options...
Ron Posted August 12, 2021 Share Posted August 12, 2021 No commotion caused. We just need to thrash these things out between us.👍 Ron. Quote Link to comment Share on other sites More sharing options...
Scammell4199 Posted January 10 Share Posted January 10 I’m rebuilding a Junior De Luxe engine (not XXE) to put in a replica Welbike I’m buying from Welbike UK. I wanted to find about oils, so got in touch with Villiers services whom i bought a load of engine bits from and they said SAE140 in the clutch housing and mineral based two stroke oil at 20:1 in the petrol. the Welbike operators manual states M160, which google says is basically SAE140. I googled the subject and found this thread. There seems to be some difference of opinion here and in other places on the web and 140 is very thick, its what goes in the diff of our Scammell, so thought i’d re-ignite the debate. I also found reference somewhere on line to Welbike’s using straight petrol, but that doesn’t seem right. Thanks. Richard Quote Link to comment Share on other sites More sharing options...
Richard Farrant Posted January 10 Share Posted January 10 Hi Richard, M160 is a SAE30 engine oil, which would seem more appropriate for the Villiers. The Army code for SAE140 gear oil is OC600, (formally C600). Someone has their wires crossed I reckon. regards, Richard 1 Quote Link to comment Share on other sites More sharing options...
welbike Posted January 11 Share Posted January 11 Yes, SAE140 is way too thick, I use SAE30, or 20W50, and to avoid a sticking clutch, I add a little ATF oil. Cheers, Lex Quote Link to comment Share on other sites More sharing options...
Scammell4199 Posted January 16 Share Posted January 16 Many thanks for your help chaps. Lex, that bike looks stunning! Richard Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.