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Post by realnutter on Apr 29, 2012 18:17:54 GMT 1
Who's using what in their engines?
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Post by oddjob1 on Apr 29, 2012 18:24:25 GMT 1
cheapest 5litre semi synthetic i can find..enough for oil + filter change + oil change
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Post by realnutter on Apr 29, 2012 18:42:02 GMT 1
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groovylee
Sheene Gold rider. Nuff said
Member of the QA team
Posts: 648
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Post by groovylee on Apr 29, 2012 18:53:20 GMT 1
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gills
Bad ass biker
Posts: 262
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Post by gills on Apr 29, 2012 20:13:31 GMT 1
i have heard that certain car oils contain friction reducers that can play merry hell with a bike clutch. not sure which ones though? Most car spec oils contain friction reducers which potentially aren't ideal for wet clutches. Many people will tell you you have to use motorcycle specific oils in machines with wet cluches for this reason. Having said that, there is quite a backlash against this view in the States, where many bikers use standard car oils in their bikes without any problems. That's a great deal, especially as they say it's suitable for bikes. I went for a fully synthetic oil at last change as I'd read it helps the gearchange. I'd say the gearchange is slightly better than it was, but not massively different (probably not worth the extra ££ for full synth!) I used Silkolene Comp4 as it was on offer at Opie Oils ( www.opieoils.co.uk).
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Post by noakira on Jun 9, 2012 10:12:24 GMT 1
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Post by irishntv650 on Jun 9, 2012 11:20:09 GMT 1
please buy bike specific oil,you all will be on in a few weeks with the same clutch slip problems,see it loads of times on forums when halfordas have an oil special
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groovylee
Sheene Gold rider. Nuff said
Member of the QA team
Posts: 648
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Post by groovylee on Jun 10, 2012 23:19:05 GMT 1
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Post by gothitjulie on Jun 11, 2012 0:40:20 GMT 1
please buy bike specific oil,you all will be on in a few weeks with the same clutch slip problems,see it loads of times on forums when halfordas have an oil special My clutch is slipping terribly, another little job for me to do at next oil change (very soon). Been using semi-synth motorcycle oil in it all the time, it's just that the clutch is finally giving up at 91k miles. I use good car engine oil in the Lario ;D It's got a dry clutch & separate gearbox, alas the gearbox & final drive oils on that are a bit of a black art to mix right, especially as one of the components is unobtainium.
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pikey
Bad ass biker
Posts: 342
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Post by pikey on Jun 11, 2012 1:19:22 GMT 1
Gearbox and final drive oils for a Guzzi a black art, what do you mean? My MK1 Le Mans was not especially needy in that department from memory.
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Post by smartiedarkblue on Jun 11, 2012 6:13:25 GMT 1
Hi all,
The NTV is designed to run semi-synthetic 10/40W. Fully synthetic will land you in a world of pain. It is only of any benefit in a modern sports bike that revs to 15,000rpm.
10/50W is too thick, your engine is working harder than nessecary when cold.
ed
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Post by McF on Jun 11, 2012 7:11:50 GMT 1
10/50W is too thick, your engine is working harder than nessecary when cold. ed Far from being an expert on this, but surely there is no difference when cold, 10/14 and 10/50 are the same viscosity - 10? It's when the oil gets warm that it will be "thicker" (or perhaps more importantly - behave like a thicker oil)
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Post by smartiedarkblue on Jun 11, 2012 7:48:26 GMT 1
I think thats the wrong way around mcf,
10W is how it behaves when hot. 50W is the thickness when cold.
feel free to correct me
ed
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wolfy
Bad ass biker
Posts: 286
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Post by wolfy on Jun 11, 2012 8:56:02 GMT 1
I use Shell Advance Ultra 10w/40 4T Fully Synthetic, the bike appears to like it, I change more often than the servicing schedule, just to be nice to the engine
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Post by ilegalalien on Jun 11, 2012 9:00:51 GMT 1
Oil viscosity refers to how easily oil pours at a specified temperature. Thinner oils have a water-like consistency and pour more easily at low temperatures than heavier, thicker oils that have a more honey-like consistency. Thin is good for easier cold weather starting and reducing friction, while thick is better for maintaining film strength and oil pressure at high temperatures and loads.
The viscosity rating of a motor oil is determined in a laboratory by a Society of Automotive Engineers (SAE) test procedure. The viscosity of the oil is measured and given a number, which some people also refer to as the "weight" (thickness) of the oil. The lower the viscosity rating or weight, the thinner the oil. The higher the viscosity rating, the thicker the oil.
MOTOR OIL VISCOSITY RATINGS
Viscosity ratings for commonly used motor oils typically range from 0 up to 50. With multi-viscosity oils, a "W" after the number stands for "Winter" grade oil. The numeric value of the first number (example 5W-20) is a measure of the pour point of the oil expressed in degrees Celsius. The rating is determined in a lab using a cold crank simulator and mini-rotary viscometer test. The oil weight is its viscosity index at 100 degrees C (the boiling point of water).
Low viscosity motor oils that pour easily at low temperatures typically have a "0W", "5W" or "10W" rating. There are also "15W" and "20W" grade multi-weight motor oils.
Higher viscosity motor oils that are thicker and better suited for high temperature operation. These may be multi-grade oils or single weight oils such as SAE 30, 40 or 50.
Single weight oils are no longer used in late model automotive engines, but may be required for use in some vintage and antique engines. Straight SAE 30 oil is often specified for small air-cooled engines in lawnmowers, garden tractors, portable generators and gas-powered chain saws.
MULTI-VISCOSITY MOTOR OILS
Most modern motor oils are formulated from various grades of oil so the oil will have the best characteristics of both thick and thin viscosity oils. Multi-viscosity oils flow well at low temperature for easier starting yet retain enough thickness and film strength at high temperature to provide adequate film strength and lubrication.
A thin oil such as a straight SAE 10W oil designed for cold weather use would probably not provide adequate lubrication for hot weather, high speed driving. Likewise, a thicker high temperature oil such as SAE 30 or 40 would probably become so stiff at sub-zero temperatures the engine might not crank fast enough to start.
Multi-viscosity grade oils have a wide viscosity range which is indicated by a two-number rating. Popular multi-viscosity grades today include 0W-20, 5W-20, 5W-30, 10W-30, 10W-40 and 20W-50. The first number with the "W" refers to the oil's cold temperature viscosity rating, while the second number refers to the oil's high temperature viscosity rating.
Note: Motor oils that have a wider range viscosity rating such a 5W-30, 5W-40 and 0W-40 are blended with more base stocks and additives. Because of this, it may be harder for a wider range oil to remain in grade as the miles accumulate (which is why GM does NOT recommend using 10W-40 motor oil. They say it breaks down too quickly and does not say in grade as long as 10W-30 or 5W-30. Also, an oil with a lower winter rating like 0W-20 or 5W-20 will contain a higher percentage of thinner base stock oil (which is typically a synthetic oil). This requires more viscosity improver additive to achieve a the same high temperature rating as a 10W-30, 10W-40 or straight 30 or 40 weight oil.
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