Synthetic Oils
Road Master
Joined: May 2005
Posts: 1,115
Likes: 4
From: Central GA
RE: Synthetic Oils
They only thing that will cause "bearing skate" as I've been told, is a lack of oil getting to the "bearings". You can use synthic right from the start. HD puts their Syn3 into the SE bikes from the factory. GM puts Mobil 1 in their Corvettes from the factory. I believe the only difference between synthic oils for auto's and bikes is; some of the addivides are removed for the auto's so as to not clog up the cats on the exhaust, but are put back in for the motorcycles because of no cats in the exhaust, (pre '06 bikes). Check out the DIY section about oils. It should explain it in better detail than I can. btw, I've been using Mobil1 v-twin for over 30,000 miles in my Dyna T-sport with no problems. Bike runs smooth and since using it no more clutch chatter and shifting is smoother (75/90)
ORIGINAL: DMS0472
I cant speak to the warenty issue but I have been warned about the use of synthetics not made right for HD, It causes something called "Bearing Skate" . Its something to do with certain synthetics being *too* slippery, the bearings lose the natural rolling action and "skate" in the races, especially in older motors. Once they do that they have a quick course into facets, just like a diamond, the results are eventual catastrophic failure. If youre going to skrimp, do so with caution.
I cant speak to the warenty issue but I have been warned about the use of synthetics not made right for HD, It causes something called "Bearing Skate" . Its something to do with certain synthetics being *too* slippery, the bearings lose the natural rolling action and "skate" in the races, especially in older motors. Once they do that they have a quick course into facets, just like a diamond, the results are eventual catastrophic failure. If youre going to skrimp, do so with caution.
Banned
Joined: Jun 2006
Posts: 167
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From:
RE: Synthetic Oils
As I said above, I only said it cause of a article on the internet, the guy was convinced or tyring to convince me (or anyone) that certain oils caused bearing skate in the Harley Davidson motor. I never witnessed a controlled study, just assumed that he was being honest, I guess that there was someone disputing his opinion and that just like in this thread. Im sorry about posting it, now. but its done so this thread is to hopefully clear up the confusion. and Cudos for the info.
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1st Gear
Joined: Jan 2006
Posts: 5
Likes: 0
RE: Synthetic Oils
Think of it this way...
If the oil was indeed so slippery that the rollers wouldn't turn, that would mean that there would need to be NO friction imparted into the rollers. If there was no friction, how could they ever wear into the race to cause "skate" Friction is what causes wear, dragging one surface over another. Friction is also what causes bearing rollers to rotate.
Can't have it both ways.
Sorry to come on heavy before, but this really gets under my skin.
If the oil was indeed so slippery that the rollers wouldn't turn, that would mean that there would need to be NO friction imparted into the rollers. If there was no friction, how could they ever wear into the race to cause "skate" Friction is what causes wear, dragging one surface over another. Friction is also what causes bearing rollers to rotate.
Can't have it both ways.
Sorry to come on heavy before, but this really gets under my skin.
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