Well the dealer who sold me my bike told me to stop using the factory-specified Motorex oil and use the Elf equivalent, as they'd side-by-side compared race bikes that ran both and there was a lot more wear inside the Motorex bike. Why would KTM recommend a poor-quality oil if they know what they're doing? Well it's because they are in partnership with Motorex.
The question being raised in this thread is how well do we trust what we're being sold? Don't for a minute think that there's no financial incentive for manufacturers to recommend certain oils, brands etc.
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