Author Topic: Mineral oil and change routine.  (Read 911 times)

Offline Athame57

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Mineral oil and change routine.
« on: February 26, 2024, 07:58:42 PM »
The 10W40 mineral oil we are supposed to use I gather has a much shorter life than synthetic oils, but we do have rather large sumps. How often do you change your oil?
I brake for animals!
1978 CB400F2 called Elen.

Offline Bryanj

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Re: Mineral oil and change routine.
« Reply #1 on: February 26, 2024, 08:01:35 PM »
I work to Honda, every 1500 miles or once a year whicher comes first
Honda say filter every other change but i do it every change.

The size of sump and mineral or synthetic dont matter a stuff, its the gearbox and rich carbs wreck the oil!

Online McCabe-Thiele (Ted)

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Re: Mineral oil and change routine.
« Reply #2 on: February 26, 2024, 08:03:45 PM »
I change my 400 oil every year as I have not yet covered close to 1000 miles.
Honda CB500 K1 (new pit dug out ready)
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

Online Bradders

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Re: Mineral oil and change routine.
« Reply #3 on: February 26, 2024, 08:44:05 PM »
I change mine every 1,500 miles, I do about 2,000 miles a year. Strangely though last time I changed it I couldn’t get anything like the 3-5 litres drained out of it.

Offline Johnwebley

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Re: Mineral oil and change routine.
« Reply #4 on: February 27, 2024, 04:54:40 PM »
I am using VMCC 10w-40 oil for mine, good price

Previously used Eurocar parts
own brand triplex 10-40

Seems to work OK,



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lifelong motorcycle rider,and fan

Offline Athame57

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Re: Mineral oil and change routine.
« Reply #5 on: February 27, 2024, 05:19:15 PM »
I am using VMCC 10w-40 oil for mine, good price
I didn't know they exist until now, I'll be looking around their website later. I've settled on Westway 10W-40 4T, a teeny little bit more expensive at £31.99 for 5 Ltr.
I brake for animals!
1978 CB400F2 called Elen.

 

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