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Author Topic: X7 250 engine oil grade  (Read 10329 times)
pathfinder
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« on: August 30, 2015, 15:19:32 »

The workshop manual states 5W-40 synthetic but I notice that my X7 250ie has been filled with 10W-40 semi-synth. at its previous service.
Does anyone use 10W40 semi-synthetic in their X7 or does anyone know if it has caused any problems?
The reason I ask is that I use 10W40 semi in my NTV650 Revere and it would be easier to stick to one grade.
I change engine oil more frequently than the service intervals so long life isn't an issue and I am not trying to penny-pinch, just want to get it right when I change the oil.
Any advice most welcome.
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Dave Milnes
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« Reply #1 on: August 30, 2015, 15:24:55 »

5W difference is negligible, it's just a tad thicker when cold and semi synth is nearly as good as fully synth but a lot cheaper. Just change it at or before the correct mileage and not be tempted to leave it any longer. Semi synth just hasn't got the longevity of fully synth but still far superior to mineral.
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2004 X9 500 Evo in YELLOW - 2016 Maxsym 600i Sport
Anderton 2004, Pen-y-cae 2005, Matlock 2006, Hay on Wye 2007, Minehead 2008, St Florence 2010, Newent 2011, North Kyme 2012, Betsw-y-coed 2013, Hardraw 2014, Parkend 2015, Whitby 2016, Mundesley 2017, Derby 2018, Telford 2019, Loch Doon 2020, Cumbria 2021.
pathfinder
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« Reply #2 on: August 31, 2015, 06:06:44 »

Many thanks Dave. Whereabouts on the Fylde coast are you?
I bought this X7 privately from Blackpool and I grew up(some say I never did grow up) in the Fylde.
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Dave Milnes
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Fylde Coast


« Reply #3 on: August 31, 2015, 16:47:23 »

Thornton
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2004 X9 500 Evo in YELLOW - 2016 Maxsym 600i Sport
Anderton 2004, Pen-y-cae 2005, Matlock 2006, Hay on Wye 2007, Minehead 2008, St Florence 2010, Newent 2011, North Kyme 2012, Betsw-y-coed 2013, Hardraw 2014, Parkend 2015, Whitby 2016, Mundesley 2017, Derby 2018, Telford 2019, Loch Doon 2020, Cumbria 2021.
pathfinder
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« Reply #4 on: August 31, 2015, 18:24:23 »

Baines Endowed Primary School.
ICI Hillhouse Mond Div apprentice 1964-68, me.
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Dave Milnes
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Fylde Coast


« Reply #5 on: August 31, 2015, 21:02:10 »

Baines too but a bit later 65-70. Never worked locally.
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2004 X9 500 Evo in YELLOW - 2016 Maxsym 600i Sport
Anderton 2004, Pen-y-cae 2005, Matlock 2006, Hay on Wye 2007, Minehead 2008, St Florence 2010, Newent 2011, North Kyme 2012, Betsw-y-coed 2013, Hardraw 2014, Parkend 2015, Whitby 2016, Mundesley 2017, Derby 2018, Telford 2019, Loch Doon 2020, Cumbria 2021.
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