I would suggest NOT buying the cheapest oil in the API range for your vehicle .
I did that from a supposedly reputable source [ COOP Agricultural ] and very soon every damn engine I had was leaking from the crankseals .
Not very funny .
For engines that I care about ,like bikes, I will only buy premium oils.
Checking the volatility of an oil will give an indication of the oil's ability to withstand high temps .There is a huge difference between the cheap and the premium brands .
The [ better] smaller companies will buy base stocks and formulate their own oils inhouse. It is not always the case that big companys simply rebadge their oils for small companys .
When travelling you will always have to compromise , your favourite brand will not always be available ,c'est la vie .
Looking at the API classification is a good guide but it's not the whole story .
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Blessed are the cracked, for they let in the light. - Spike Milligan
"When you come to a fork in the road ,take it ! When you come to a spoon in the road ,take that also ."
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