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General Discussions & Off Topic Post all your general interest stuff here and please keep the "smut" in the BASEMENT, thanks

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  #1  
Old 06-08-18, 15:07
Ermaganish Ermaganish is offline
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Engine oil weight?

So, I need to do an oil change for my XT660x, but The only oil I can get locally is 10W50, is this oil too heavy to use when the last owner used 10w40?

or will i get by just fine with this engine oil?`
  #2  
Old 06-08-18, 15:18
nikroc nikroc is offline
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Personally I'd use the internet or get some 10/40 ordered in from your local bike shop.
  #3  
Old 06-08-18, 19:34
Ermaganish Ermaganish is offline
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Quote:
Originally Posted by nikroc View Post
Personally I'd use the internet or get some 10/40 ordered in from your local bike shop.

I can order 10w40, but that goes from 40 for 4 litres, to 130.... for 4 litres, its the special yamalube like race spec... So either its using the 10/50 or get shafted in the a** by ridiculus prices...
  #4  
Old 06-08-18, 19:51
nikroc nikroc is offline
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https://www.ebay.co.uk/itm/Yamaha-XT...kAAOSwK6RZN982
  #5  
Old 06-08-18, 22:01
cca cca is offline
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10 years with 10w50. Synthetic. On one occasion 10w60. No problems at all.
  #6  
Old 06-08-18, 22:10
nikroc nikroc is offline
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Thumbs up

Quote:
Originally Posted by cca View Post
10 years with 10w50. Synthetic. On one occasion 10w60. No problems at all.
There's your answer.
  #7  
Old 06-08-18, 22:14
hannesd hannesd is offline
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10w50 here too! no worries,just as long as it's for wet clutch applications
  #8  
Old 07-08-18, 08:18
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Chalk Two Chalk Two is offline
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Here's the yawn, yawn bit.....it's a bit like watching paint dry.

The SAE tests oils and assigns an arbitrary weight or grade (viscosity) number to the oil depending on its flow rate at different temperatures. The SAE numbering systems goes: 0, 5, 10, 20, 30, 40, 50, 60. The grade refers to the oils ability to flow or lubricate an engine at a certain temperature. The lower numbers are thinner, less viscous oils suitable for low temperatures generally found in winter. The ‘W’ seen in an oil’s grade stands for ‘winter’ (eg 5W30)
0W oil will flow correctly up to -30 degrees C
5W oil will flow correctly up to -25 degrees C
10W oil will flow correctly up to -20 degrees C
15W oil will flow correctly up to -15 degrees C
20W oil will flow correctly up to -10 degrees C.
The flow rate of oils are also tested at a ‘hot’ temperature of 100 degrees C to simulate a running engine. The 2nd number in a Multi-grade oil refers to the ‘hot’ viscosity of the oil. So a 5W30 oil at 100C will only thin as much as its higher rating. Think of it like this: a 5W30 oil is a 5-weight oil that will not thin more than a 30-weight oil when it gets hot. Multi-grade oil ratings look like this: SAE 5W-30. This is based on a 5W oil, tested at -25 degrees C, but at high temperature it will not thin out more than a '30' weight oil would.
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Last edited by Chalk Two; 07-08-18 at 08:29.
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