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2 Stroke oil
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Bee175
Felixstowe, Suffolk
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June 4, 2019 - 9:34 am
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I remember the Esso Blue advert Nick so you're in good company!

We used to put petrol in our derv for the same reason. Up to 50/50 in severe weather.

But the paraffin is a new one on me.

BSA Bantam B175 1971 and BSA C15 1966

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nickjaxe
Runcorn Cheshire UK
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June 4, 2019 - 9:51 am
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I always have a stock on...for my tilly lamp...just in case.

My Bantam video              https://www.you.....jpOFmzRZRI

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BSAdave
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June 4, 2019 - 10:52 am
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I use the petrol filler cap cup to measure the oil, my thinking is BSA already had done the maths, with regards to diesel i used to put a litre of two stroke oil in with a full tank of diesel on my VW T4 then i switched to using vegetable oil instead of diesel The van run mush better on the vegetable oil than it did on diesel in the winter I used to switch to a mix of 50/50 . Once the price of vegtable oil got to be about the same price as diesel i stopped 183052_202782709747653_5465405_n.jpg

I could agree with you, but then we would both be wrong

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cocorico
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June 4, 2019 - 12:18 pm
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nickjaxe said
bom bom bom bom...Esso Blue...is that showing my age?  

It certainly is, Nick...

Bee175 said
...What's the paraffin for? Didn't know you could still get it!  

I picked up the trick from one of ferguson's posts, (** Please log in to view ** ). Makes interesting reading, as do his other posts on blueprinting / lightly tuning the engine.

If you can't find paraffin, try kerosene, maybe some lamp oils (which may even perfume your exhaust embarassed).

1956 D3 in the back of the barn with 6 other bikes ahead of it!

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nickjaxe
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June 4, 2019 - 12:58 pm
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I just buy Esso 97 octane...zero Ethanol.

My Bantam video              https://www.you.....jpOFmzRZRI

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nickjaxe
Runcorn Cheshire UK
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June 4, 2019 - 1:01 pm
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BSAdave said
I use the petrol filler cap cup to measure the oil, my thinking is BSA already had done the maths, with regards to diesel i used to put a litre of two stroke oil in with a full tank of diesel on my VW T4 then i switched to using vegetable oil instead of diesel The van run mush better on the vegetable oil than it did on diesel in the winter I used to switch to a mix of 50/50 . Once the price of vegtable oil got to be about the same price as diesel i stopped  

I used to use new unused Veg oil in my Landrover diesel 50/50 got it for nowt...stunk like a chipshop...always made me feel hungry.

My Bantam video              https://www.you.....jpOFmzRZRI

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BonesCDI
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June 5, 2019 - 10:25 am
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I have read documentation from an oil company that during synthetic 2 stroke development they realized that the esters in fully synthetic 2 stroke oil can cause corrosion.

This is part of the reason semi-synthetic oils were developed to overcome this.

The truth is that most oils are made from common base lubricants.

People are running every type of oil from 16:1 to 50:1 and I don't think anyone has mentioned that they thought they had a lubrication failure on the forum, yet it would have to be one of the most polarizing subjects to bring up! 

Running and project bikes from 1912 -2005..........She hasn't said stop yet.........

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Bee175
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June 5, 2019 - 10:35 am
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BonesCDI said...People are running every type of oil from 16:1 to 50:1 and I don't think anyone has mentioned that they thought they had a lubrication failure on the forum, yet it would have to be one of the most polarizing subjects to bring up!   

Good points, especially the last paragraph.

BSA Bantam B175 1971 and BSA C15 1966

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Concretecow
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July 2, 2019 - 9:21 pm
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At risk of being shot down in flames by purists, and excommunicated from the club, I use Tesco unleaded, and Wilko brand 2T oil.  Cheap as chips, but surely better than what was around in 1950 when my engine was assembled, presumably by a Blacksmith rofl Oh, and for my D1, the manual suggest 20:1, therefore 400 ml in 8 litres of fuel if my maths serves me correctly.  That's what I'm using, but I haven't gone too far yet, just the end of the road and back (it's not registered yet).

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swalsh58
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July 2, 2019 - 10:09 pm
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Concretecow said
At risk of being shot down in flames by purists, and excommunicated from the club, I use Tesco unleaded, and Wilko brand 2T oil.  Cheap as chips, but surely better than what was around in 1950 when my engine was assembled, presumably by a Blacksmith rofl Oh, and for my D1, the manual suggest 20:1, therefore 400 ml in 8 litres of fuel if my maths serves me correctly.  That's what I'm using, but I haven't gone too far yet, just the end of the road and back (it's not registered yet).  

I use whatever I find but not the synthetic stuff. I use supermarket fuel too, (not exclusively) so they can excommunicate me as well. I believe there is a calculator in the members area to work out how much oil to add for the various ratios. 

Current bikes......1958 D5, a 77 Suzuki GT250 and a 77 Honda CB125S. I have a 74 Kawasaki S3 400 and a B175 waiting for restoration. A 1980 Honda CB400N waiting for MOT.  Everyday ride is a 2011 Harley Davidson Sportster. 

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Bee175
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July 2, 2019 - 10:56 pm
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Concretecow and swalsh58. It's ok, you can stay. Just don't use cheap gear oil, otherwise you'll have to leave 😀

20:1? Wow, that's thick. I believe that would be a similar viscosity to Lidl tomato soup!

Used to run mine on 20:1 over 40 years ago. Plenty smoky and many decokes. Prefer to run 33:1 nowadays and no decokes in 4 years and 4,000 miles.

BSA Bantam B175 1971 and BSA C15 1966

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Concretecow
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July 3, 2019 - 9:44 pm
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Bee175 said
Concretecow and swalsh58. It's ok, you can stay. Just don't use cheap gear oil, otherwise you'll have to leave 😀

20:1? Wow, that's thick. I believe that would be a similar viscosity to Lidl tomato soup!

Used to run mine on 20:1 over 40 years ago. Plenty smoky and many decokes. Prefer to run 33:1 nowadays and no decokes in 4 years and 4,000 miles.  

I don't use cheap gear oil.  I went to try to buy some SAE20 monograde.  I got a lot of puzzled looks, people sucking through their teeth, the older ones asking what the heck I was running, but in the local motor factors, they gloomily said "well, there's a can showing on the computer, but it's probably years old.  Don't s'pose we've got it any more.  Bound to have been chucked out.  No demand , see?" They eventually ran to ground a very dusty can at the back of the warehouse.  Having parted me from the thick end of 25 quid, they then became most interested, and wanted to see photos of the bike etc.  So the gears are being lubed with the finest Comma Classic monograde.  And I have a lifetime's supply 🙂 (My lifetime, not the bike.  That's running better at 70 than me somewhat younger than that.

I haven't tried substituting Wilkinson 2T oil for Lidl tomato soup, but I imagine it will be even smokier than the current mix, so it's not something I believe I can endorse :-O

The 20:1 mixture was in my handbook for the D1.  It's the first tank of fuel I've used since de-rusting the tank (using somewhat controversial methods), and the first time it's run in 40+ years, so I went by the book.  I think, based on the haze of blue smoke hanging over the neighbourhood, I may reduce the ratio somewhat.  Your 33:1 sounds like a good starting point.

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Bee175
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July 3, 2019 - 11:07 pm
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So pleased to hear you have some nice classic oil for your Bantam. Would hate to have seen you thrown out of the club 😀

I don't blame you at all for going by the book. Much better than my method which was little more than a guess. I wanted easy figures, so I plumped for 30ml of oil per litre. Have marked the tank cap measuring thingy at 30ml to make filling up in fuel stations easier.

May I be bold and suggest that if you're going to reduce your oil mix, that you do it gradually and see how your rooster feels about it? I'm sure it'll be fine though. I've mentioned elsewhere on the forum that I accidentally ran mine on 55:1 for around 70 miles one afternoon. I was giving it some welly too, but it didn't seem to mind at all.

BSA Bantam B175 1971 and BSA C15 1966

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Mags 1
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July 4, 2019 - 12:26 am
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Concretecow said

I don't use cheap gear oil.  I went to try to buy some SAE20 monograde.  I got a lot of puzzled looks, people sucking through their teeth, the older

BSA recommend SAE 40 for the Bantam gearbox, maybe SAE 20 for the later bikes hydraulic forks, 2 stroke oil is usually SAE 30,  by the way.

Gearbox oil needs to be thick enough to work in hot weather, I'd have thought, not thinner?

Four now on the road and at least several in bits.

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Bee175
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July 4, 2019 - 12:29 am
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SAE40 in mine (B175) as specified in the workshop manual. I believe a heap of people on here use 20/50 successfully.

BSA Bantam B175 1971 and BSA C15 1966

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