10W40 in RC8

[Pecha72]

Originally Posted by tnargs

The manual says 10W-50 synthetic oil.

Would I be endangering my engine

Then that 10W-50 is what I´d use.

I can´t answer on the endangering part, but 10W-50 is not very common for a manufacturer to recommend, so there may be some particular reasons, why this is so (other than the common reply, that it´s a conspiracy... )

just my 0.02

[Kafn8td]

Originally Posted by slackmeyer

It'll be fine. But I always run synthetic 10w-50. Except when i run synthetic 5w-40. Or Dino 15w-40. Or something else. But hey, I barely have 60k miles on my bike, who knows when something could go wrong.

Best oil thread reply ever.

[mcmann]

Originally Posted by tnargs

Very instructive reply, thanks for the information mate.

Regarding my sanity in saying Mobil 1 is a standout product: sorry I did not mean to offend and I am not an oil expert, but I have twice seen oil test results and both times Mobil 1 made all other products look silly. So I post what I think I learned.

Very, very happy to be proven wrong.

Here you go:

[Mr_Snips]

I'm gonna leave it with this. Run what the manufacturer recommends and whether you like Mobil 1, am soil, motul, or anything else you really shouldn't have issues.

I forgot asking ten people about oil will result in 100 answers. Run what you can and ride when you can. I like motul. I have my reasons for liking it. Doesn't make your choice wrong

[DuctTape]

Well shuckie darn, this is what the manual says for my 2011:

Engine oil (SAE 10W/50)
According to
– JASO T903 MA ( p. 209)
– SAE ( p. 209) (SAE 10W/50)
Guideline
– Use only engine oils that comply with the specified standards (see specifications on the container) and that possess the corresponding properties. KTM recommends Motorex® products.
Supplier
Motorex®
– Power Synt 4T



Engine oil (SAE 5W/40)
According to
– JASO T903 MA ( p. 209)
– SAE ( p. 209) (SAE 5W/40)
Guideline
– Use only engine oils that comply with the specified standards (see specifications on the container) and that possess the corresponding properties. KTM recommends Motorex® products.
Supplier
Motorex®
– Power Synt 4T

[slackmeyer]

Originally Posted by DuctTape

Well shuckie darn, this is what the manual says for my 2011:

My 2006 manual says, under technical specifications: Engine- SAE 5w/40, 10W/50 (Motul Power Synt 4T)

2 pages later, in "Consumer information for USA only, Appendix 2, it shows a detail of the frame sticker, with
Engine Lubricant Specifications- Engine Oil type- SAE 15w/40.

So, I'm not too worried about the range from 15w/40 to 5w/50; apparently there are 3 oil types specified for this bike.

[DuctTape]

Originally Posted by slackmeyer

My 2006 manual says, under technical specifications: Engine- SAE 5w/40, 10W/50 (Motul Power Synt 4T)

2 pages later, in "Consumer information for USA only, Appendix 2, it shows a detail of the frame sticker, with
Engine Lubricant Specifications- Engine Oil type- SAE 15w/40.

So, I'm not too worried about the range from 15w/40 to 5w/50; apparently there are 3 oil types specified for this bike.

Quality filters and all should be well. I've been running 10-w-40 in water cooled 4 stroke engines (Track Bikes) with 20-w-50 in 4 stroke air cooled hogs for decades and all has been well.

I do have to admit I have yearly oil analysis done by Blackstone labs on all my vehicles to keep an eye on wear. http://www.blackstone-labs.com

(Side Note) By doing this I was able to run 14,000 mile extended drains with my 04 Nissan Titan and after 160,000 miles she's still a bat out of hell!