Any reason not to use Rotella T6 in a Milwaukee-8? If not, under $25 per gallon at Walmart makes it attractive. Claims "extreme heat protection", not sure what if anything that means (perhaps high smoke point and shear resistance), but I assume it can't hurt in an air & oil-cooled engine. Hey, there's a bike on the label!

Anyone find a reason to dislike Bosch filters? I've used those forever with other bikes.

 

Deleted. I didn't realize T6 was available in 15w-40.

 

yes, because it's a 15W40 and the required manufacturer's spec is 20W50 .. it really is that simple

 

I run 20w-50 or 20w-60. Brand of oil won't cause engine damage, but too thin of a weight sure can.

I use WIX oil filters or S&S as they're made by WIX. I order a case of the S&S at a time from my Indy shop.

 

Oh, you're right - for some reason I thought it was available in 20w50. Well, that would make it an eminently bad idea!

 

Agreed. Keep in mind startup and operating temperatures though as viscosity changes with temp. AND… SAE viscosity can vary by 20% and still be acceptable!

Top things I learned in my training:

1. Viscosity is the single most important aspect of selecting any lubricant.
2. The oil film (the barrier that oil creates between two sliding surfaces) is only 1 to 3 MICRONS (that’s millionths of a meter, or about 1/40th the size of a human hair).
   • Never reduce viscosity below OEM recommendation. Viscosity could be increased to 3x OEM recommendation, but there are other restrictions and considerations.

 

I wouldn’t use the Bosch 3330 personally.

Filter is made from cellulose with fiberglass added. Does not flow as well or filter as well as a true synthetic/fiberglass.

Also, it’s only a 20 micron filter. It’s not going to filter anything less than that. Generic marketing for Bosch Premium filters is 99% effective at removing 20 microns.

Knowing that the oil film protecting metal from wear is only 1-3 microns, I don’t want 5 micron particles flowing through my oil, let alone 20 micron.

 

Excellent. Just the info I was looking for - thanks!

 

The filter is fine but not the oil.