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Question About Ryobi Lawn Mower RLM5319SMEB
I have just bought a Ryobi RML5219SMEB petrol law...

I have just bought a Ryobi RML5219SMEB petrol lawn mower but could not get 10W30 oil so got 10W40 oil from my local garage. Is it ok to use this grade of oil?

Asked by Paul on 07/20/2014 1  Answer

ManualsOnline posted an answer 9 years, 10 months ago

The ManualsOnline team has found the manual for this product! We hope it helps solve your problem. Get the Manual Here

Rewarder User posted an answer 9 years, 9 months ago

5 It’s okay to use the 10W40 oil. The only different between the two oils is that, the 10W30 has a low thickness at high temperatures than the 10W40 oil. Both oils are multigrade hence functions the same. Multigrade oil has an alphabetical letter between the two numbers. e.g. 10W30, 10W40, 10W50 etc. A huge different could have been experienced if you bought a strait weight oil which is indicated by only one number. e.g. 30w or 50w. Strait oil doesn’t have additives as compared to multigrade. They hence tend to be unable to reduce the amount of thickening and thinning and therefore they cannot lubricate the engine over different ranges of temperature for a specific period of time.
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