Author Topic: Oil  (Read 2592 times)

Offline Johnny4428

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Oil
« on: February 21, 2022, 05:06:24 PM »
Local motor factor here has stock of 15w-40 mineral oil but no 10w-40. Considering that this would allow me to use in - 15c instead of - 20c I can’t see that would be a problem. I know this subject had been flogged to death, but my question is any problem with using 15w-40 in these classic Honda’s? If it is negative anything outside I don’t think I will be jumping on the bike.
1952 Cymoto on Triumph bicycle.
1961 Matchless G3
1974 Honda CB550K1
1978 Honda CB550K3
1999 ST1100 Pan European 50th Anniversary.
1975,1984,1986 Honda C90’s
1973 Honda CB750K3
1977 Honda CB550 (almost)

Offline royhall

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Re: Oil
« Reply #1 on: February 21, 2022, 05:12:08 PM »
15w-40 is fine. I use it in all my bikes.
Current bikes:
TriBsa CCM 350 Twin
Honda CB350F in Candy Bacchus Olive
Honda CB750F2 in Candy Apple Red
Yamaha MT07 (2026) in Black
Triumph T100C
Suzuki GS1000HC
Honda CB450K0 Black Bomber
Honda CB750K5 in Planet Blue Metallic

Offline Bryanj

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Re: Oil
« Reply #2 on: February 21, 2022, 05:50:19 PM »
Even better if they list it as Diesel engine oil

Offline McCabe-Thiele (Ted)

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Re: Oil
« Reply #3 on: February 22, 2022, 11:46:51 AM »
Even better if they list it as Diesel engine oil

The original Shell Rotella back in the mid seventies certainly was good in terms of detergent content is that why diesel spec oil would be better Bryan?
Honda CB400NA Superdream (current money puddle)
Honda CB500 K1 (second money pit)
https://www.sohc.co.uk/index.php/topic,28541.0.html
Honda CB400 four super sport (first money pit)
Link to my full restoration http://www.sohc.co.uk/index.php/topic,23291.0.html
This is a neat 500 restoration in the USA.
http://forums.sohc4.net/index.php/topic,151576.msg1731556.html#msg1731556

Offline paul G

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Re: Oil
« Reply #4 on: February 22, 2022, 12:38:58 PM »
I believe it also has something to do with anti foaming with diesels having turbos and we have wet clutches and gears  :D
Honda CB400/4
Kawasaki Z650 C2
Honda CD175 sloper

Offline Bryanj

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Re: Oil
« Reply #5 on: February 22, 2022, 03:11:41 PM »
Additives that are no longer in petrol oils that are better for gearbox.
Running the oil in the box destroys the oil quicker

Offline Moorey

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Re: Oil
« Reply #6 on: February 22, 2022, 07:30:49 PM »
 
  I have been buying oil for years from Germany in 20ltr tubs, but no longer due to Bre  xit.  :(
« Last Edit: February 22, 2022, 07:34:17 PM by Moorey »

Offline SteveD CB500K0

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Re: Oil
« Reply #7 on: February 22, 2022, 07:48:07 PM »
Sneaky move there Chris…


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1971 CB500K0

Offline Moorey

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Re: Oil
« Reply #8 on: February 23, 2022, 12:43:32 PM »
 :
Sneaky move there Chris…


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