Robin Subaru EH035 - What oil to use ???

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moonshiner

New Member
Apr 23, 2011
199
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tennessee
i use Mobile 1 full synthetic only in everything , but anything will work , if you look in the user manual , 10 w 30 is for cooler weather , and 10w 40 /10w 50 is for hotter weather , use a good synthetic oil , i wouldnt use dollar store oil ...xct2
 

MotorBicycleRacing

Well-Known Member
Jul 28, 2010
5,844
109
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SoCal Baby!!!
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What oil is recommended for this engine.

this is what i have found at robin america website.
Engine Oil SAE 10W-30 SF or higher

well whats best for my little engine.
I use 30 weight oil in my Robin Subaru EH035
I have over 3000 miles on it.

I read the manual and talked to several oil experts.
Manual says;
If multi-grade oil is employed, oil consumption tends to
increase when the ambient temperature is high.
30 weight is good for 50' to over 90' which is higher than 10W-30

These small 4 stroke motors that have no oil filtration work best on
single weight oils in warm climates like CA.

You would only need a multi weight oil if you are running it in extreme
cold to hot conditions. I don't ride in those conditions LOL

I have just converted my two 4 stroke motors to Opti-4 30 weight.
2nd motor is a Honda GXH 50 that had maybe 1000 miles on it.
Only put very few miles on the R/S since changing to Opti-4
so i can't comment yet.

My 50 cc Huasheng 4 stroke will be getting Opti-4 from mile one
and will be broken in to Opti's recommendations.

http://www.opti2-4.com/html/opti-4.html

Opti-4 is the highest quality petroleum engine lubricant available, and is formulated specifically for the severe demands of power equipment.

Opti-4 is a unique blend utilizing patented Eutectic additive technology for anti-wear characteristics combined with the industry's highest standard for anti-corrosion and thermal stability. Through the use of the Eutectic additive, Opti-4 extends the life of any 4-cycle power equipment engine by reducing friction, heat, and wear.
 
Last edited:

zean

Active Member
Dec 5, 2010
321
216
43
california
Hi everyone. I bought some Briggs and Stratton small engine oil from Walmart, it says specially formulated for 4-cycle air-cooled engines, SAE 30, use between 40 and 100 degrees F+. I haven't used it yet. I imagine it's good. Now I have mobile synthetic 10w-30 in a robin subaru EHO-35 friction drive last used in 2009. That runs good.