10/60 vs 10/50 in very hot weather

K2Berg · Feb 13, 2010

I looked to see if there was a comparison or discussion about this and didn't find it. My seaching skills may be lacking.

I am contemplating picking up a case of 10/60 AGIP full synthetic for hot summer riding.

Ok, hot is all relative, especially for you Aussies.

I'm saying 85 - 90 + F for hot with plenty of humidity.

I may be over thinking and yes, I do tend to over do things.

My thinking is to prepare for a potentially very hot summer and making sure I do as much as I can for my Swede so she stays comfortable and is able to be worked hard.

Motul seems to make a 15/50 ester but for starting purposes I am trying to keep the cold weight low to be kind to my starter.

Informed opinions are fully appreciated. I know you Aussies can give plenty of info on experiences.

Grazie!

oyk · Feb 13, 2010

dont know your type of driving (enduro, supermoto, etc)
but as for me i always use the same oil since new in my 2008 fs650, which is the agip 10w40 semi.
the use is supermoto racing, and here in greece last summer i use to practise a lot at temps about 35celcius.

this got me until now 230 hours and absolutely NO ISSUE in my engine.
i change the oil every race or practise .

for me its not about the oil ( as long it covers the certain motorcycle specs), but the frequent changes.

regards, pavlos

steve · Feb 13, 2010

If oil temperature is an issue, then its possible to fit an oil cooler, although I think that most who have done this were mainly interested in increasing the oil volume to reduce change intervals.

In my experience, the pre 09 Bergs don't overheat, and the Delo 400 15/40 every +/- 5 hrs is fine. 1st/2nd gear single track in 35 deg + overheats me before the bike, although it can flatten the 650 battery when the fan keeps running. No fan on the 501, and no problems.

I recall that Dale Lineaweaver reckoned that oil temps were never an issue in the Bergs. He also was the one that put me/us on to the Delo 400.

Steve

K2Berg · Feb 13, 2010

Thank you gentlemen.

It looks my intentions are over kill.

mrksem454 · May 27, 2010

In my opinion 10-50 is about $43 for 4L, Fusch stuff is $40 for 5L, Both are approximately equivalent, My 600rr takes 3.4L with a filter change and I change my oil & filter every 3rd track day, thats about once every 3 months. So I kind of save $10 by using Fusch oil and I have to keep the remaining oil to reuse 3 months later , which doesn't even have labels intending it for motorbike use.

Robg187 · May 27, 2010

oyk said:
dont know your type of driving (enduro, supermoto, etc)
but as for me i always use the same oil since new in my 2008 fs650, which is the agip 10w40 semi.
t.

regards, pavlos

Hi Pavlos

what fully synth from Agip would you recomend i'm in cyprus and been using motorex but its costing a bit.

i want full synth because i thnk semi might affect my clutch.
Thanks allot.

Taffy · May 27, 2010

it's not about the second figure really. it's about the first figure: the actual viscocity when running and the oil IS warm.

do you need thin (5) medium (10) or thick (15) oil?

that is the question. I would go for a 15 in extremely hot climes but for a north european a 10 in the summer is good i'd say.

regards

Taffy

BoneGraft · May 27, 2010

Taffy said:
it's not about the second figure really. it's about the first figure: the actual viscocity when running and the oil IS warm.

do you need thin (5) medium (10) or thick (15) oil?

that is the question. I would go for a 15 in extremely hot climes but for a north european a 10 in the summer is good i'd say.

regards

Taffy

Taffy you are hurting my brain. I had always understood that the 1st figure was the cold oil viscosity and the 2nd figure was the hot oil viscosity equivilent, making the 2nd figure the one to consider if concerned about higher running temps effecting oil viscosity. Would you please explain to me why the 1st figure is the one in question?

Taffy · May 28, 2010

the first figure is what you actually run in the engine when hot. simple as.

the second number helps you define a multi-grade's quality from cold. the higher that second number, the better quality but at the end of the day you are still given a choice of WHICH VISCOSITY OIL you want your engine to run with when it is hot. all a multigrade does is help you with a thinner oil when cold.

put it another way, do you now want 5/60, 10/60 or 15/60. you still have to choose first and foremost what actual oil you want to run when hot. in your engine.

regards

Taffy

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10/60 vs 10/50 in very hot weather

K2Berg

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