Post Your Latest (Motorcycle) Oil Change!

[Pete in PA]

2008 Yamaha Royalstar 1300

Out: Rotella 15w40/5w40 mix and a PG 6607 oil filter

In: 50/50 mix Rotella 15w40 T4 and 5w40 T6, new PG 6607 filter installed

You know you're essentially making Rotella T5, right? But I like It.

 

[Bonz]

You know I showed you how to average numbers when you did a similar mix, right? Add both of the low numbers and divide by two. It's a 10w on the low end if all else is equal.

For percentage change: Find the difference between the beginning number and the ending number, then divide by the beginning number. Then multiply by 100. Going from up 5w to 10w is a 100% increase. If going down from 15w to 10w, that's a 33% decrease. Respectfully, those are not hitting the target of essentially T5 15w40. With respect to a semi synthetic blend yes, in terms of potential oil grade if all else is equal, it's not.

 

[ZeeOSix]

^^^ Or you could use the Widman viscosity mixing calculator, which will give a more exact answer of the viscosity at 100C, 40C or -5C.

https://www.widman.biz/English/Calculators/Mixtures.html

 

[Pete in PA]

You know I showed you how to average numbers when you did a similar mix, right? Add both of the low numbers and divide by two. It's a 10w on the low end if all else is equal.

For percentage change: Find the difference between the beginning number and the ending number, then divide by the beginning number. Then multiply by 100. Going from up 5w to 10w is a 100% increase. If going down from 15w to 10w, that's a 33% decrease. Respectfully, those are not hitting the target of essentially T5 15w40. With respect to a semi synthetic blend yes, in terms of potential oil grade if all else is equal, it's not.

T5 10W-40

 

[black thunder]

You know you're essentially making Rotella T5, right? But I like It.

I suppose so.

 

[troop]

You know you're essentially making Rotella T5, right? But I like It.

Well .. That might depend on the actual synthetic content of T5 oils. I'm guessing the 50/50 mixture of T4/T6 will have higher synthetic content, but who knows ??

 

[Pete in PA]

Well .. That might depend on the actual synthetic content of T5 oils. I'm guessing the 50/50 mixture of T4/T6 will have higher synthetic content, but who knows ??

True. At least making your own you know for sure.

 

[Bonz]

Well .. That might depend on the actual synthetic content of T5 oils. I'm guessing the 50/50 mixture of T4/T6 will have higher synthetic content, but who knows ??

Agree. My response about the T5 mix in post 822 was saying it is a semi synthetic mix with respect to half conventional and half full synthetic. However not making any deliberate comparison to how much synthetic T5 might have itself. The main point was with respect to the grade of the oil a person would end up with all else equal. I ran the 100 CST through that calculator in the above post, best I can tell it's a 12.5w on the low end. If that floats the boat, then sail on!

 

[black thunder]

2008 Yamaha Royalstar venture 1300 (fathers 2nd bike), drained out Rotella 5w40/15w40 mix, removed a Pg 4612 filter.
Refilled with 15w40 T4 5w40 T6 mix and a fram drive 6607 filter, looked like an encore.

2006 Yamaha R1, removed. Pg4612 filter, drained Out some kind of Rotella, not sure what mix I had in it.
Refilled with 15w40/5w40 Rotella mix and another Pg4612 filter

 

[Junkin55]

2001 Honda XR250R
Out: OEM filter and honda GN4 10w40
In: Wix filter and Amsoil Metric motorcycle 10W40.

 

[car54]

2008 Yamaha Vino 125 16k miles.

Out: Schaeffers s9000 5w-50. 2k miles on oil.
In: Maxima scooter full syn 10w-40.

 

[Junkin55]

Bought a new to me bike this week. 2016 Honda CB500F
Changed oil this morning Out:Wix filter, unknown oil
In: Honda filter, Amsoil 10w-40. So far this has been a very fun bike to ride