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TheGazWaz |
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TheGazWaz Nitrous Nuisance
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Rogerborg |
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Rogerborg nimbA
Joined: 26 Oct 2010 Karma :
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Posted: 15:00 - 05 Jun 2018 Post subject: Re: Your gona slate me but... which oil.. Synth or semi? |
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TheGazWaz wrote: | Sorry for yet another oil question but there's soooo many posts on oil and I'm brain ragged as to which to use because so many people have so many facts and opinions. |
Fortunately this oil thread will be the oil thread to end all oil threads.
Normally I say whatever semi synthetic 10W-40 is cheapest and nearest, but on an actual performance bike that isn't already shagged out, I'd spring the extra for full synthetic.
Not that I think it really needs it. Suzuki-san just say any SF or SG SAE 10W-40, with 3,500 mile changes, and anything you can buy today will comfortably exceed that. But for the difference in price, I reckon I'd treat it to what it deserves. I'm awfully generous with other people's money. ____________________ Biking is 1/20th as dangerous as horse riding.
GONE: HN125-8, LF-250B, GPz 305, GPZ 500S, Burgman 400 // RIDING: F650GS (800 twin), Royal Enfield Bullet Electra 500 AVL, Ninja 250R because racebike |
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TheGazWaz |
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TheGazWaz Nitrous Nuisance
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DrSnoosnoo |
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DrSnoosnoo World Chat Champion
Joined: 28 Mar 2012 Karma :
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MCN |
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MCN Super Spammer
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weasley |
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weasley World Chat Champion
Joined: 16 Oct 2010 Karma :
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Posted: 19:47 - 05 Jun 2018 Post subject: |
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Good try, 7/10.
Oils made with synthetic base oils need less viscosity modifier in them to resist temperature-induced thinning. It is the VM that shears (mechanically breaks down), hence a synthetic oil will tend to resist it more by virtue or having less VM in it. Base oil molecules themselves are very shear resistant, whether synthetic or mineral types.
To OP - if you can pony up for a decent synthetic oil then give it a go and see if the shifts get smoother. ____________________
Yamaha XJ600 | Yamaha YZF600R Thundercat | KTM 990 SMT | BMW F900XR TE |
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WmY |
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WmY Renault 5 Driver
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weasley |
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weasley World Chat Champion
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MCN |
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MCN Super Spammer
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TheGazWaz |
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TheGazWaz Nitrous Nuisance
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P. |
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P. Red Rocket
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WmY |
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WmY Renault 5 Driver
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weasley |
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weasley World Chat Champion
Joined: 16 Oct 2010 Karma :
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Posted: 13:27 - 06 Jun 2018 Post subject: |
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Paddy. wrote: | As the resident oil man...
I use cheapest 10w40 I can get my hands on, replace filter every 3k and oil every 1.5k.
I've had my 125 get to 77k on 1.5k oil changes with cheapest oil, my GSXR has now had 3 oil changes and 1 filter change and is at 8k from the 4k I bought it on.
I don't use named brands, cos slippy oil is slippy oil, but changing at those intervals, surely my choice of oil is irrelevant. Even the car gets a sub 5k change and bi-annual filter change, so I'd like to assume I'm more on top than the manual states. |
As I've said before, what works for you, works for you. You may not have got every last drop of power/efficiency out of your engine over that period, you may have worn it away by a few nanometres more, you may have been throwing away perfectly serviceable oil, but in the end you have got what you think is what you needed out of the oil and engine. Win I'd say.
The main loser is the poor, suffering environment into which you have been (responsibly) pouring copious amounts of carcinogenic used oil. Plus all the natural resources you have used to make all the oil you are putting through these engines. The crude oil price may well be index linked to your bike useage...? ____________________
Yamaha XJ600 | Yamaha YZF600R Thundercat | KTM 990 SMT | BMW F900XR TE |
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weasley |
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weasley World Chat Champion
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Posted: 13:36 - 06 Jun 2018 Post subject: |
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WmY wrote: | What about using 5W-40? The specs., when looked up, for many oils are confusing. Some are interchangable (e.g. ACEA A3/B4 can be used instaead of ACEA A3/B3 (yes, I know it's not relevant to "grade")) and specificatoins go out of date quite quickly. |
It is complicated. no question. Ultimately you should be able to match the specifications on the oil you buy with what your manual asks for, but even that isn't a given as time moves on and manuals don't get updated - not everybody knows that API specifications are generally backwards compatible, so if your manual asks for API SG or SH and all you can find is API SM or SN, you can still use it.
The ACEA thing is both more complicated and more sophisticated. ACEA specs are far more onerous than API ones as they cover both petrol and diesel use. A3/B4 is essentially like A3/B3 on steroids, so yes, the A3/B4 can be used in place of A3/B3, but the reverse isn't necessarily true. A3/B3 is pretty rare though, most oils go straight for A3/B4 (and may also add A3/B3 to the label to help people choose).
5W-40 vs 10W-40 means (in very basic terms) that at 100°C (typical working temperature) the two oils are roughly the same viscosity. When cold, the 10W-40 will be thicker than the 5W-40; the 5W-40 will be tested to work at -30°C whereas the 10W-40 will work at -25°C. By "work" I mean will flow acceptably. Because of this, the 5W-40 will tend to use better base oils, which have naturally better cold flow properties - these same base oils will then also offer better overall performance across the operating environment (per MCN's link above). All of this means they tend to be a bit more expensive. ____________________
Yamaha XJ600 | Yamaha YZF600R Thundercat | KTM 990 SMT | BMW F900XR TE |
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P. |
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P. Red Rocket
Joined: 14 Feb 2008 Karma :
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Posted: 15:38 - 06 Jun 2018 Post subject: |
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weasley wrote: |
As I've said before, what works for you, works for you. You may not have got every last drop of power/efficiency out of your engine over that period, you may have worn it away by a few nanometres more, you may have been throwing away perfectly serviceable oil, but in the end you have got what you think is what you needed out of the oil and engine. Win I'd say.
The main loser is the poor, suffering environment into which you have been (responsibly) pouring copious amounts of carcinogenic used oil. Plus all the natural resources you have used to make all the oil you are putting through these engines. The crude oil price may well be index linked to your bike useage...? |
I drain it straight into a manhole, out of sight out of mind. (I don't, it goes back into a tub and I use it for lube/sexual purposes/vandalism to badly parked cars)
So in short, I don't see any degradation thats noticeable, so its probably not bad but the all round effects and carnage to environment and the smallest of wear on metal is probably the most obvious thing thats different? |
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WmY |
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WmY Renault 5 Driver
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Rogerborg |
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Rogerborg nimbA
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P. |
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P. Red Rocket
Joined: 14 Feb 2008 Karma :
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Posted: 07:20 - 07 Jun 2018 Post subject: |
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Cancer doesn't kill everyone.
I'm still here |
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Rogerborg |
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Rogerborg nimbA
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grr666 |
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grr666 Super Spammer
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Posted: 07:59 - 07 Jun 2018 Post subject: |
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True dat, my best mate had it twice. Once at 7 years old. Full chemo the whole 9 yards and again when he was about 30
which resulted in thyroid gland removal and an awesome full width of the neck scar. He then went on to father a boy so the
treatments didn't stop him from having live rounds in his love gun either.
And on oil, I'm about to use some Mercedes Benz semi synth low ash 10w40 left over from my last van to do an
oil change on the XR125 I'm tinkering with at the mo. Probably later today actually. ____________________ Currently enjoying products from Ford, Mazda and Yamaha
Ste wrote: Avatars are fine, it's signatures that need turning off. |
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TheGazWaz |
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TheGazWaz Nitrous Nuisance
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WmY |
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WmY Renault 5 Driver
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BusterGonads |
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BusterGonads Trackday Trickster
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TheGazWaz |
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TheGazWaz Nitrous Nuisance
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BusterGonads |
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BusterGonads Trackday Trickster
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Posted: 19:01 - 11 Jun 2018 Post subject: |
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What's really great GazWaz is that you're enjoying riding it so much and that it feels just right. Not much better than that is there? As for the fragrant smell, I was just put in mind of how we daft lads way back used to tip a bit of Castor Oil into the tank and get a great smell out of the exhaust. I think it might have been called Castrol R.
The daft things we did to make our old nineteen-fifties Beezers 'go better' had to be seen to be believed. Still. I was never happier than rolling down the street, trailing a castor smelling stink and grey haze behind me. I felt like I was King of the Road. ) |
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Old Thread Alert!
The last post was made 5 years, 314 days ago. Instead of replying here, would creating a new thread be more useful? |
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