BMW K bikes (Bricks)

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1Back to top Go down    Which Engine oil is best! on Mon Oct 21, 2013 7:18 pm

sudhirjin

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This is a very stupid and noob question, But me seeing all the available options and what i read from various sources confuse me, Which engine oil is good for K100rs 16v! I once read not to use synthetic oils is it true??

    

2Back to top Go down    Re: Which Engine oil is best! on Mon Oct 21, 2013 8:30 pm

japuentes

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There are many options as you said, but in my experience the best oil is the one that you can easily find, at the lowest cost per mile, and meets the technical criteria indicated by the engine´s maker.
So, for my K´s engine its a mineral 20w50.
For others is a synthetic 10w50.
And you can go on and on.
I think there is not a unique solution.
Best regards
JAP


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1988 K100RS SE/ABS
    

3Back to top Go down    Re: Which Engine oil is best! on Mon Oct 21, 2013 8:39 pm

duck

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Any oil that gets changed regularly.  K bike engines are "bulletproof" and short of running them dry will not fail from anything caused by what oil you use.

I've been using synthetic oil in many K bikes for years and years.  No issues.  I usually run Mobil 1 15-50 or Shell Rotella T6 5-40.

Tires are much more important than oil.


__________________________________________________
Current stable:
86 Custom K100 (standard fairing, K75 Belly pan, Ceramic chromed engine covers, paralever)
K75 Frankenbrick (Paralever, K11 front end, hybrid ABS, K1100RS fairing, radial tires)
86 K75C Turbo w/ paralever
94 K1100RS
93 K1100LT (x2)
91 K1
93 K75S (K11 front end)
91 K75S
14 Yamaha WR250R
http://www.ClassicKBikes.com
    

4Back to top Go down    Re: Which Engine oil is best! on Mon Oct 21, 2013 9:07 pm

RicK G

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No such thing as a stupid question just stupid mistakes from not asking questions.
I use Shel RX5 mineral oil in all my engines even the lawn mower.
For a K bike use any good brand name oil and keep using the same oil. They are robust engines and any good brand name oil nowdays is far better than the best oil available when the bike was made.
I change the filter at each oil change and some at every second change, it's just what you feel comfortable with and in the long run it doesnt seem to matter.


__________________________________________________
If everything seems under control then you aint goin fast enough:- Mario Andretti
Bikes 1986 K100RT, 1993 K1100 LT, 1994 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki X 2 & 1976 SR 500 Yamaha for now
    

5Back to top Go down    Re: Which Engine oil is best! on Mon Oct 21, 2013 9:39 pm

BIG D

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Cool 

Not a stupid question at all, it must be one of the most debatable subjects of all and all sides have their die hards and because of the K car type construction [seperate gearbox and dry clutch] it also includes car and diesel oils, I find regular changes to be the best answer find a good oil you are happy with and change it regular.

BIG D

    

6Back to top Go down    Re: Which Engine oil is best! on Mon Oct 21, 2013 9:40 pm

JR_K100RS

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Silkolene 20w-50 Synth in mine

JR


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Diamond Grey ( 617 ) 1987 K100RS ( European Delivery ) Original owner
    

7Back to top Go down    Re: Which Engine oil is best! on Tue Oct 22, 2013 12:16 am

sudhirjin

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Thank you all, I finally got Mobil 1 10w-40.

One more question:  when ever i change the engine oil do i have to change the oil in transmission and drives?? can i use the same oil like 10w - 40.???

    

8Back to top Go down    Re: Which Engine oil is best! on Tue Oct 22, 2013 12:27 am

RicK G

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The transmission and final drive only need the oil changed at every 20 000km or 12 000 miles and use 80w-90SAE gear oil


__________________________________________________
If everything seems under control then you aint goin fast enough:- Mario Andretti
Bikes 1986 K100RT, 1993 K1100 LT, 1994 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki X 2 & 1976 SR 500 Yamaha for now
    

9Back to top Go down    Re: Which Engine oil is best! on Tue Oct 22, 2013 3:37 am

Ghost who rides

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Looking at your city/state it says SFO. A quick search by me failed to decypher that.

 My point is if you are in a cold climate then 10 W 40 is ok but in a hotter state go for 20 W 50

as recommended by all the above suggestions.


__________________________________________________
1986  K 75 C   2nd owner 187,000kms showing .
1987  K100RT  Police repainted, rough and unloved.
    

10Back to top Go down    Re: Which Engine oil is best! on Tue Oct 22, 2013 8:36 am

AJ.Valente

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I've come to doing maintenance in cycles, such as running fuel additive to clean the injectors every time I change engine oil. Also, change transmission and rear end oil every time I get new tires. It's a lot easier to remember than adhering to strict milage records IMO.


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'98 K1200RS Marrakesh Red

My old K100 RT Pics and Mods
    

11Back to top Go down    Re: Which Engine oil is best! on Tue Oct 22, 2013 11:08 pm

duck

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RicK G wrote:No such thing as a stupid question
Just stupid askers.



(Don't take offense. It's just a joke.)


__________________________________________________
Current stable:
86 Custom K100 (standard fairing, K75 Belly pan, Ceramic chromed engine covers, paralever)
K75 Frankenbrick (Paralever, K11 front end, hybrid ABS, K1100RS fairing, radial tires)
86 K75C Turbo w/ paralever
94 K1100RS
93 K1100LT (x2)
91 K1
93 K75S (K11 front end)
91 K75S
14 Yamaha WR250R
http://www.ClassicKBikes.com
    

12Back to top Go down    Re: Which Engine oil is best! on Wed Oct 23, 2013 1:07 am

RicK G

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That always make me think of the tradesman I was assigned to when I started my apprenticeship. he would have made 2 of me and I am no midget, he was a New Zealand Maori also a very good tradesman. The first thing he said was " you can ask all the stupid questiond you like but you make any stupis mistakes and I'll kick your arse till your nose bleeds".
That always stuck with me and I have actually said it to a couple of apprentices that I have had working with me.



Last edited by RicK G on Wed Oct 23, 2013 1:08 am; edited 1 time in total (Reason for editing : speileng what esle)


__________________________________________________
If everything seems under control then you aint goin fast enough:- Mario Andretti
Bikes 1986 K100RT, 1993 K1100 LT, 1994 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki X 2 & 1976 SR 500 Yamaha for now
    

13Back to top Go down    Re: Which Engine oil is best! on Fri Nov 01, 2013 3:08 am

Rabidchiwawa007

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I used synthetic 20w-50 for awhile, but with my last change I switched to synthetic 10w-40.  I noticed a difference.  Start ups are quite a bit smoother, and the bike seems to be a little happier.  It runs overall smoother and it feels like there's less resistance on the engine.  Like they say, though, anything black and slippery will be just fine.


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1968 BSA Lightning
1991 BMW K100RS 16v with K1100LT fairing
    

14Back to top Go down    Re: Which Engine oil is best! on Fri Nov 01, 2013 5:59 am

RicK G

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I use Shell Helix HX5 and have never in 29 years had any failure due to oil but if you ask 200 experts you will get 300 opinions. It has to be the most talked about subject on the planet.
Most of the run of the mill good brand name oils today are far better than the best you could buy when the bricks were designed.
You have a big range but stick with whatever you choose.


__________________________________________________
If everything seems under control then you aint goin fast enough:- Mario Andretti
Bikes 1986 K100RT, 1993 K1100 LT, 1994 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki X 2 & 1976 SR 500 Yamaha for now
    

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