Well the question is should i use a flush to really get the last nuggins out of my old 1989 high mileage 60000 ish miles gs 500 .. running ok , in fact very well considering slightly low compressiom and due a change pretty soon ...want to get her as good as i can for the summer ... also advice wanted on the oil viscosity as the engine is somewhat worn and useds some ( not a huge amount ) of oil ... currently standard grade ... I have changed the oil and filter a lot because she came to me as an abused oild bike and i want to keep her going as long as forever until the oneday rebuild but hear stories that a flush can cause issues with older engines ... thanks folks
there is no need to run an engine flush if you have been doing regular oil and filter changes. if you are running 15-40 deisel oil and it is using oil, jump up to a 50 grade.
Thanks , yes I am fastidiuos about oil changes , ok - i will jump a grade and see how that goes , just tiopped up and it looked pretty clean and very slippery so all good . Thanks for the reply ... I have been using the bike oil thus far and have a large tub but when thats used I will switch to a higher grade as you suggest
I don't even know what an engine flush is.
Just put new oil and filter in every 3,000 miles until you reach 100,000 miles and then replace the motorcycle.
Well I will be delighted if it makes it to 100k ,,, still going well enough at more or less 60k but i think some of the horses may have turned into enthusiastic ponies ... love the old gs all the same ... probably get a good used engine in the very long run or rebuild , whatever works out cheaper