Mixing oil - Motorcycle-Journal Forums

bodie27 · 09-01-2007, 05:58 AM

Well I have some leftover oil from the last few oil changes and was figuring on mixing it. The are the same brand etc but one is fortified synthetic and the other is just synthetic. I rang 3 different dealers and got different opinions each time. My take on it that the oils have a different viscosity so all you are doing is altering the viscosity slightly and since I have run both types previously then what harm can there be?? I mean its just oil right?

For interest one is Shell Advance SX 4 stroke synthetic fortified and the other is Shell Advance VSX 4 stroke full synthetic.

Sgt Mike · 09-01-2007, 07:31 AM

Go for it, I do it every now and again. Heck some people talk like motorcycle engine are delicate swiss watches, they are no more prone to failure than any other engines. When I had my Vulcan 750, I made my own snthetic blend with Rotella mineral and synthetic.

Quote:

Originally Posted by bodie27

Well I have some leftover oil from the last few oil changes and was figuring on mixing it. The are the same brand etc but one is fortified synthetic and the other is just synthetic. I rang 3 different dealers and got different opinions each time. My take on it that the oils have a different viscosity so all you are doing is altering the viscosity slightly and since I have run both types previously then what harm can there be?? I mean its just oil right?

For interest one is Shell Advance SX 4 stroke synthetic fortified and the other is Shell Advance VSX 4 stroke full synthetic.

GregR1 · 09-01-2007, 10:05 AM

my strategy is to use a bit of left-over oil from the last change to start the current change. the bike takes around 3.8L and the jug is 4.0L (roughly), so i tend to get a bit left over. that left-over is the first bit of oil that i pour in the next time i do the oil change, so that it doesn't "sit" for long. obviously, from the new jug, there will be a bit more left-over, and i'll use that up the next time. and so on...

Easy Rider · 09-01-2007, 05:48 PM

Quote:

Originally Posted by GregR1

the jug is 4.0L (roughly),......
......from the new jug, there will be a bit more left-over,

Looks like you are our resident expert on handling jugs.

GregR1 · 09-01-2007, 05:50 PM

Quote:

Originally Posted by Easy Rider

Looks like you are our resident expert on handling jugs.

shh! don't let sunny get wind of this, or i'll be classified as a confirmed potential rapist.

bodie27 · 09-01-2007, 10:55 PM

Thanks fellas...good to get some confirmation once in a while

09-01-2007, 05:58 AM	#1 (permalink)
bodie27 Kickstand Operator Joined: Jun 2005 Bike: C50 Boulevard Location: Australian Posts: 291	Mixing oil Well I have some leftover oil from the last few oil changes and was figuring on mixing it. The are the same brand etc but one is fortified synthetic and the other is just synthetic. I rang 3 different dealers and got different opinions each time. My take on it that the oils have a different viscosity so all you are doing is altering the viscosity slightly and since I have run both types previously then what harm can there be?? I mean its just oil right? For interest one is Shell Advance SX 4 stroke synthetic fortified and the other is Shell Advance VSX 4 stroke full synthetic. __________________ Negative Ghostrider, the pattern is full

09-01-2007, 10:55 PM	#6 (permalink)
bodie27 Kickstand Operator Joined: Jun 2005 Bike: C50 Boulevard Location: Australian Posts: 291	Thanks fellas...good to get some confirmation once in a while __________________ Negative Ghostrider, the pattern is full

09-01-2007, 10:05 AM	#3 (permalink)
GregR1 ... Joined: Mar 2007 Posts: 2,308	my strategy is to use a bit of left-over oil from the last change to start the current change. the bike takes around 3.8L and the jug is 4.0L (roughly), so i tend to get a bit left over. that left-over is the first bit of oil that i pour in the next time i do the oil change, so that it doesn't "sit" for long. obviously, from the new jug, there will be a bit more left-over, and i'll use that up the next time. and so on...

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