engine flush

[wrussell]

hello i have drained my oil from my 1vj and taken the filter out and the oil is very thick and black,does anybody know if an engine flush can be used or shall i put clean oil in and run it for a while and then do an oil change after a couple of weeks to freshen the oil up any feedback would be grateful thank you.

[palace15]

I can't really comment on Japanese engines that are machined to fine tolerances, but it was always a thing I was told, never use flushing oil on old British motorcycle, as once you cleaned all the crap out of them they would 'rattle' even more!


I would just settle for the oil and filter change then change both again after about 500 miles, then keep to regular sensible mileage changes, I believe the secret to long life with Jap engines is regular oil changes. My CRF230 oil is changed every 600 miles and often less, Honda recommend changing every 600, this is due to it only holding 1 litre and having just a gauze mesh filter.

[Big Yellow Tractor]

Originally Posted by dave ede

I would just settle for the oil and filter change then change both again after about 500 miles, then keep to regular sensible mileage changes

I would do the same except you may not need to wait for 500 miles. Just have a look at the oil and when you think it's mucky enough, do the change.

[BlackDogZulu]

If you can find a source of cheap engine oil, fill up with that and run the bike for an hour or so. Drain, and refill with the proper stuff. You will be astounded at how much crap comes out. This was great in the days when Halfords and the like did really cheap oil - you could flush the engine every oilchange for a couple of quid. Now, even Halford's cheapest is a significant investment, and this is not the option it once was. Flushing oil is no longer recommended for any engine, as it contains solvents to break down sludge and deposits which can (in some cases) break solid deposits down too quickly and leave you with blockages which can wreck the engine.

[Bobmech]

If you're going to refill it with oil for approx 500 mls to flush it(don't forget to clean out the oil strainer in the front down-pipe first), I would suggest using a Diesel oil (like Shell Rimula or similar) as it has a higher detergent content, so will clean the internals better than normal Petrol oil.
After the 500 mls, drain it, & clean out the oil strainer again, & renew the oil filter.
Probably a good idea to use Diesel oil long term to clean it further & keep it clean.

[PatOnTrip]

I did use diesel once.

I filled the engine completely and removed the spark plug. Then hold the starter button for about 30sec. Flush the engine. Then repeated the process again and again...

I did that on my KLR because it was filled with sand. The bike still ran another 50 000km. Now the piston would need new rings at 100k km.

Patrick

[Jens Eskildsen]

More info on the oil strainer please.

Where exactly is it, how to disemble and so on, thx a ton.

[lawries]

[Jens Eskildsen]

Okay, now I know just about where the opil strainer is, what do i need to disemmble to get it out and clean it?

Just about everything?

[foggie]

I'm about to to do the same oil change, again thicky black sludge in my 1985 XT600 Tenere.

What grade quality would you advise to replace it with? - a fully synthetic type?

Thanks

Gary

[wrussell]

:confused1:well that opened up a few ideas but when it comes to the oil grade/type i have read somewhere (cant remember where!) that if you use an oil with too many additives as in fully synthetic oil it can make your clutch slip ?? anyone had any expierence of this ?

[Dodger]

If your engine is in reasonable condition you should use a motorcycle specific oil of the correct viscosity .I'd avoid car oils .
A lot of the VStrom guys use Shell Rotella non synthetic [diesel oil ]15/40 with very good results .It does not have friction modifiers and will be fine in transmissions as well .

[Jens Eskildsen]

I use fullsynthetic 5W40 oil from www.louis.de - Motorrad & Freizeit

Cheap, and seems fine. someties in the summermonths i change it to a 10W50 allso fullsynthetic.

Mine is an '03 and uses no oil what so ever.

If it burns oil, just use a thicker one, imo theres no need to go "down" in grade.

Get a 15w50 er something like that.