I'm back to Castrol Actevo X-tra 4T 10w-40 for the winter. It's the first oil I put in my bike after I bought it but couldn't find it anywhere local after that. Bought a couple of 4 Liter jugs for a good price online a couple of weeks ago.

1 1/2 years later, I've changed brands several times with everything from cheap 100% Suzi dino to Mobile-1 20w-50 V-twin synth, and am back to where I started and what I like most, the Castrol. Keeps the leaks low and the shifting smooth. Bike leaked like a sieve with the Mobil-1, but, and a big butt, it is a 22 year old bike with over 20K on it, so leaking seals and everything else were probably there before the Mobile-1 went in. I was warned. Most important thing to me is to change the oil and filter on a regular basis.

Crisco's good for chicken,... but I use canola....
It's healthier....

PerrydaSavage wrote on 09/26/09 at 12:00:50:



Perry, I was arguing against that thought, that was a Bill quote, I dont say that.

OK, we'll accept this as an unbiased third party article and see what it says.  (note, yellow highlight is mine)

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"Three synthetics stand out from the rest: Mobil Delvac 1, Mobil-1 SUV and Shell Rotella T Synthetic. These are C certified industrial oils meant to be purchased in 55 gallon drums and used by companies which run a lot of diesel engines. The Commercial oils, as discussed above, have more expensive additive packages which are meant to prolong engine life and oil life, as opposed to being cheap to buy at Pep Boys and helping the car companies meet their CAFE requirements. These oils meet all the automobile requirements through SJ, and also have extra additives to help pick up gunk in the engine, to keep the oil from becoming acidic, and to maintain the oil's viscosity over a long time. In fact, the manufacturers talk about their oil's viscosity resistance to shear forces - exactly what a motorcycle needs. Shell Rotella-T Synthetic is available at Wal-Mart for $13 / gallon, so I consider this the motor oil of choice. Delvac-1 is very hard to get in the west - there are only two places in all of California where you can buy it. Mobil-1 SUV is readily available everywhere for about $4.50 / quart. When used with the correct filters, these oils are certified for 50,000 mile oil change intervals, and are frequently used for 100,000 to 150,000 miles in diesel long-haul trucks. Now, before you get all excited about the possibilities, you must also keep in mind that the diesel engines don't run their oil through their transmission, and the large diesels all have two oil filters, one a normal paper filter, and the other a 1 or 2 micron filter that catches pretty much everything."

old article OF
RotSyn is $19
and I wouldn't use Mobil1 SUV in a m/c, I did and my clutch slipped.

The Rotella T I bought at about $9.00/gallon is now ( last I looked, couple of months ago) at ~~$11.00 or about $2.75 a quart. The stash is down to about 6 gallons & Im hearing some rumblings of a drop in oil p[rice, maybe thatll come thru & I can get a bunch of oil before the trillions & trillions handed to the bankers drives us to Wiemar style inflation,.

Royal Purple (she's purple and she likes her oil to match); Advance Discount Auto Parts