Tesco's 10w-40 oil query

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Richard Simpson Mark II
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Re: Tesco's 10w-40 oil query

Post by Richard Simpson Mark II » Mon Sep 02, 2019 5:49 pm

redbikejohn wrote:
Mon Sep 02, 2019 5:10 pm
I've used cheap car oil in my xt660z once the mileage got high and I stopped worrying about it. 104k in and no clutch slip. Used car stuff in old gsxr too and no clutch slip 57k on clock.

Ironic...the very cheap car oils won't contain the friction-reducing additives, so better than more expensive full-synthetics in that application.

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Re: Tesco's 10w-40 oil query

Post by Ksithumper » Mon Sep 02, 2019 6:43 pm

Well, it wouldn't be the first time someone uses the car stuff, that is specifically designed with antifriction additives - instead of the correct JASO MA oil that is specifically formulated to avoid slippage in wet clutches.
Then, when their clutch burns out on a snotty hillside trail in the middle of nowhere in the rain when it is getting dark, they forget to congratulate themselves on having saved a few quid on oil. (A typical aftermarket clutch pack is about 80 quid by the way, twice that for OEM)
Instead, they come on the forums and tell everyone how unreliable their ktm/honda/enfield/chinese whatever is...

Honestly, oil is the cheapest item in your engine. Use the right stuff, in the right amount, and change it more often than recommended. Use the old stuff to lubricate your chain and save on spray cans instead.

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Re: Tesco's 10w-40 oil query

Post by redbikejohn » Mon Sep 02, 2019 9:45 pm

104k miles isnt too bad for my xt lol. Ok it's a low stress engine only used for commuting. I used this for a couple of changes when they did buy one get one free. They almost always have 45% off offers via emails.

https://www.eurocarparts.com/ecp/p/car- ... 3474141448

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Re: Tesco's 10w-40 oil query

Post by Dark Knight » Tue Sep 03, 2019 6:34 pm

Most admit that I only use the best quality oil in my bikes, but suppose it probably really depends how hard you are riding the bike.
Lower quality oils will thin more at high temperature and the oil pressure will drop.
A problem that will be more noticeable with an air cooled bike.

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Re: Tesco's 10w-40 oil query

Post by macvisual » Tue Sep 03, 2019 7:38 pm

Thanks for all replies....! Ok great advice, I will only use proper dedicated motorcycle oil.

Cheers for all advice..!!

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Re: Tesco's 10w-40 oil query

Post by 92kk k100lt 193214 » Wed Sep 04, 2019 8:44 pm

My Suzuki owners manual states to use; 10w-40 API SF or SG, or SH, or SJ

You can use higher letters than recommended without any bother, they reflect improvements in oils after the book is written. So SN would be safe to use,

BUT as said, its not for wet clutch so don't use it.

Dry clutch would be ok though and I quite happily use them in my K bikes. I am taking yet another one of them over the 100,000 miles this month and never a problem.

Regular oil changes and good oils. Remember selling oil at that price is a loss leader to get you in the door, not a cheap oil.
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Re: Tesco's 10w-40 oil query

Post by minkyhead » Fri Sep 06, 2019 11:39 am

its very very difficult to get folks not to use a bigger brand ...there is the peace of mind factor that if its 11 quid a litre it must be good .....tbo its very hard then to move away ..
ive been using unbranded bulk oil on high miles fleet bikes ..me own bikes for two decades with no problems at all .and still do now

dont care high preformance /low performance engines they get the same .

...i get a nose bleed if its over three quid a litre :geek:
whats the wether forcast ..wheres me map

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Re: Tesco's 10w-40 oil query

Post by Oop North John » Fri Sep 06, 2019 11:55 am

minkyhead wrote:
Fri Sep 06, 2019 11:39 am
...i get a nose bleed if its over three quid a litre :geek:
Off topic I know :roll: but when in France I don't buy wine which is cheaper than petrol :D

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