Engine flush before oil change

[The Tot]

Hi guys,

Just got a quick question. I'm gonna change my oil in a few days in preparation for the winter (so i've just in some cheap hein gericke semi synth stuff). I usually change the oil every 6 months/6000 miles or so, but it's the first time I've personally been bothered to do it, as opposed to getting a mate to do it.

Do bike engines require engine flush prior to filling it with new oil, i.e. you shove in x amount of engine flush in with the old oil and drain that before putting in the new one, or would that kinda bugger up the clutch plates?

Nevertheless, hopefully THIS time around, I won't strip the threads of the sump bolt nor will the bike end up with a dicky oil pressure switch like the previous times i've attempted it!
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The Tot 2019 Z1000SX - 2007 R1
Never argue with autism

[Pete.]

Just change the oil & filter IMO
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a.k.a 'Geri'

132.9mph off and walked away. Gear is good, gear is good, gear is very very good

[Ichy]

Are you planning on just letting it stand over winter or are you using it? Would you do another oil change next year? Just wondering if the HG stuff is just going to be wasted?

anyway, don't use oil flush.

Its basically a detergent, not dissimilar to diesel. It can cause more problems than you want to know about on older engines. At best it serves no purpose at all, at worst it can cause problems with seals and may release embedded crap that may cause other problems.
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[rotax81]

as said.. forget the flushing stuff. your old oil will be carrying the crap around along with the filter.
something that has had regular services should never need that shite

warm the bike up before draining.... but you knew that
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ZX636C6F road. ZX636C1H track. ZX7R redundant. ZX0.5R minimoto as ornament.
Audi A4 Avant 1.9TDi and VW Transporter 2.5TDi 888 Special (no mot and tax lol)

[stinkwheel]

[The Tot]

I guess engine flush is snake oil then.

Nah, i'll be using the bike throught winter. At the end of the day, any engine oil does the same job as the other so I'm not too fussed. I won't be ragging the bike much throughout winter, but I won't be surprised if i clock 3000 miles during now and march... right about the same time as my next oil change.

If all goes to plan, the i'll be doing mallory next saturday so I'd rather run fresh oil rather than shagged oil.

Used HG stuff before and had no problems with it... although semi-synth, 4 litres for 14 quid does sound a bit suspicous.
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The Tot 2019 Z1000SX - 2007 R1
Never argue with autism

[stinkwheel]

I found the HG fully synthetic stuff made my engine a lot noisier. No issues with the other sorts.
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“Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles.

[rovens]

I was under the impression it was better to change the oil after a trackday rather than before.

[Keir]

[cagiva gezzer]

For my car i buy a litre more oil than i need (or use new cheap stuff) and pour that into the filler once i've drained the old oil.

First 250mls pushes out the old stuff, the next 2 lots gets clearer, then the final 250mls is clear.

Or, if you're that bothered, do a change with cheapish oil and ride for 100 miles and drop it again.
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"because one stroke isnt enough and four strokes waste two"

[LeeR]

I'm currently using the HG 10W-40 semi-synthetic in my bike, although it is JASO MA rated it is only API SF/SG rated. If you're going to use it long term I would check your handbook/owners manual.

I've used the Castrol and the Motul equivalents and found that they seemed to degrade quite quickly and the engine got noisy after 2000 miles. I'm not saying that's a scientific assessment, it's just my personal opinion/experience. Given the cost and the fact that the HG oil is suitable for my engine I decided to use it changing it monthly, that's approx every 2000 miles.

I've been using it for about a year and apart from the major service every 10-12 months when the mechanic overfills it with Motul it's now my oil of choice.
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