About this item.....
Rock Oil Synthesis 4 10/40 is a full synthetic 4 stroke motorbike engine oil that has been carefully blended for todays modern high performance engines which demand much more from a motorcycle oil.
The advanced formula and carefully chosen additive packs used in Rock Oil Synth 4 1040 has been specifically developed to provide the ultimate protection whilst releasing maximum power from an engine.
Synthesis 4 10 40 is a fully synthetic engine oil which combines the latest synthetic bases with advanced additive technology to give outstanding performance and incredible shear stability (which means it stays in grade longer).
Rock Oil Synthesis 4 10w40 is approved to the highest Japanese engine specification, JASO MA2, allowing safe, predictable use in wet clutch applications.
Rock Oil Synthesis 10/40 is suitable for road going and racing use.
Oil type: 4 stroke (4T) - Fully synthetic
Viscosity rating: 10w40
Approvals: JASO MA2
API SL
SAE 10w40
FREE DELIVERY on this item! Not sure which oil you need for your bike? Ask Us!
Postage information....
Postage price for this item: Free Delivery
Please note: This item weighs 25.000 kg.
Orders over 1.2kg and hazardous items (e.g. batteries and oils) are not available to UK Isles (including Isle of Wight), Northern Ireland and Scottish outer areas
(some Scottish postcodes starting AB, IV, KA, KW, FK, HS, PA, PH, ZE).
More info...
Additional info....
Stock: 
In stock
Normally sent same day if ordered before 12pm (Mon to Fri only).
Usually delivered in 1-3 working days. More info....
Brand: Rock Oil
EAN (barcode):
MPN (manufacturers part no):
Weight (approx): 25.000 kg
Condition: New
Notes: This item is only available to Mainland UK, Wales and Mainland Scotland
Questions and answers about this item....
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Question: I just wanted to know what does JASO MA and JASO MA2 standard for oil mean?
Answer: Warning, the following part is a bit boring (unless your an oil anorak!):
JASO stands for an oil standards organisation known as the
Japanese Automotive Standards Organization.
In 1998 Jaso developed a set of standards for 4 stroke oils which were measured against an oils ability to resist clutch friction, slippage, protection offered against engine wear and pitting in the gear box (JASO-MA was the standard given to higher friction oils and JASO-MB to lower friction oils).
JASO-MA2 is a recent standard brought out by JASO for oils which meet the stringent motorcycle performance needs of later (and more modern) motorcycle engines.
The JASO MA and MA2 specifications are the only true motorcycle specific approvals available and as such are a sign that the oil has passed stringent motorcycle performance tests.
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