Help please three things

eagle56 · Post by **eagle56** » Sun Apr 01, 2007 11:12 am

i intend to change the oil every 1000miles
or less and have a supply of 15/40.

ill this be o/k if it is change at these intervalls.
i though that the 40 was the most important
grade and the 15 made it easier to flow when its cold.

I also though that detergent was good maybe I'm wrong.

itma · Post by **itma** » Sun Apr 01, 2007 12:28 pm

Ought we not to have a seperate forum for this eternal multigrade v monograde question, preferably one with all the previous arguments listed so the newbies can start their own fights?Edited by - itma on 01 Apr 2007 11:29:18 AM

paul knapp · Post by **paul knapp** » Sun Apr 01, 2007 4:09 pm

eagle56, I have yet to see a standard engine fail, in normal use, throu not being run using the correct grade of oil!!....BUT.....Detergent oils are designed to be used in conjunction with an 'in line' filter, as fitted to modern engines, to catch the circulating combustion residue, and any other bits that have broken/worn/chipped off.
If you are going to use multigrade, fit a magnet to the sump plug and oil tank drain and do more frequent oil changes, for peace of mind!..

Paul

itma · Post by **itma** » Sun Apr 01, 2007 9:11 pm

but I have Paul, within 1500 miles; an ES2 Norton, run on Duckhams 20/50, the old green stuff, back in about 1970 something...looked as if it`d been run dry yet was coated in oil everywhere.
I like my bike too much to try the experiment in mine.

Merlin · Post by **Merlin** » Sun Apr 01, 2007 10:55 pm

Perhaps you should write your comments to the oil companies and tell them they have no no no I am getting too old for this just carry on ITMA

Biscuit · Post by **Biscuit** » Mon Apr 02, 2007 12:44 am

Well Ken, whilst you have a 'dig' everytime you post via your signature, I feel free to carry on.

How about this, Ex AFS G3LS, 1954, owned by the same man for 30 years, in which time he covered 45,000 miles, run solely on multigrade all that time, not any old multigrade, but the cheapest he could find. No problems in that time.

Eric · Post by **Eric** » Mon Apr 02, 2007 10:06 am

The debate about multigrade v monograde seems never to go away but it should properly be called detergent v non-detergent and many people may not realise many specialist supplied monograde oils can contain detergents. As the name suggests detergent oils will clean or help clean things out so dont repeat dont use them in an engine that has not been stripped and already cleaned. That includes the oil tank unless you can fit an inline particulate filter preferably in the flow line. If this is not done there is a an almost certain risk the detergent oil will scour out most of the old sludge and rubbish left in the engine from previous use of non-detergent oils and circulate it around the engine so it becomes lapping compound instead of oil. But starting with a clean engine and oil tank and preferably some sort of modern oil filter in at least the return line everything will stay clean and you can use modern detergent oils that are readily available even in ASDA so cheap you could change it every 500 miles and still save money by avoiding the high prices demanded for old formulation non-detergent monograde oils. Thats my bit I have said it before and will probably say it again but thats life.Edited by - Eric on 02 Apr 2007 9:53:51 PM

itma · Post by **itma** » Mon Apr 02, 2007 10:36 am

Not having a dig Alan, just my opinion based on my past experiences; what you get if you ask.
Point is as I`m sure you have said for yourself sometimes, if it works for you stick with it and thats what I`ve done.
Multigrade works for you,thats fine; then again you put your bikes together with a bit more precision than many do and I suspect thats a factor.
I stick with whats proved reliable for me so thats the advice I give if asked, as for myself I`m unwilling to take the chance of ruining something that works well and keeps working, especially now as the chances of my being able to put it right again are fading.
Never the twain shall meet on this subject I think.
Bizarre how it, more than any other subject seems to cause so much upset.
Todays multigrade may well have overcome the problems it undoubtedly caused years ago; I have no experience of them, not having a modern vehicle that needs it, I`m as ever unwilling to risk it in my old and well worn motor.
Had`nt realised that what I thought was a humourous sig upset anyone, if it does I`ll remove it.

Biscuit · Post by **Biscuit** » Mon Apr 02, 2007 1:53 pm

Not at all upset Ken, leave your signature by all means, I'll have a grin every time I see it. Anyway, who am I to suggest you remove it?

We have had our share of thin skins, and I hope I'm not one of them!!!

itma · Post by **itma** » Mon Apr 02, 2007 2:24 pm

Damn it Alan I was about to go off for a sulk.
In future I will tell them all to run on kebab fat .