Oil (Type/Weight)

I won't add my 2 cents worth because I don't have any experience with Nortons and their needs. I will bring up though, that the new Amsoil catalogue lists a straight 60 wt heavy weight racing oil. "Highly resistant to thermal degradation and oxidation. Also great for older model Harley Davidson motorcycles." I may try that next spring. By the way, Amsoil has a very complete analysis of motorcycle oil requirements and comparison of different brands on their web site. If I was smarter, I would post a link. :|

Wasn't it interesting Reline was not tested? I strongly suspect Redline outperformed Amsoil.

I'm with you JimC. I have voiced that suspicion myself in the past. From everything I've read, Redline is as good as any and better than most. I probably piss away a lot of money on oil unnecessarily (surplus quality and overly frequent changes) but I consider it a good investment.

After looking a little deeper into Amsoils's comparison without Redline, I found this http://www.synthetic-motor-oil-change-a ... dline-oil/ . It appears that t :wink: here might an on-going rivalry here! I'm sure that both brands are probably more then adequate, but Amsoil is easier to find for me.

Buckle your seat belts guys, I'm sure they are both great products.

I'm in the synthetic camp myself, being an ordnance engineer dealing with hyrdraulics daily on bomb lifts and large calibre guns. I know that oils have come on a long way over the past 20 years, though the lubricating ability of caster oil is still supreme, it can't be made to obtain sensible in-service life, thus regular drain intervals.Those that have stripped an engine that has been running on sythetic will know just how well the parts are still coated and lubricated compared to straight oils. My magnetic drain plug atracts only a 1/4 of the debris it used to and that is at 2000 mile changes as compared to my old 1000 mile changes with the striaght oils, the oil stays cleaner longer, it runs cooler, warms up quicker, does not aerate like straight oil - just look in the oil tank - synthetic will be clear oil, stright is opaque with air bubbles. with rocker covers removed after a week in the garage, the oil can be seen within seconds flowing to the head. Shop around and the price difference is not a lot either, as for mobil 1, is does not achieve the latest specs whereas Comma and Tesco synthetic does - comma and Mobil are one company - how strange.

My magnetic drain plug atracts only a 1/4 of the debris it used to and that is at 2000 mile changes as compared to my old 1000 mile changes with the striaght oils, the oil stays cleaner longer

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Ditto that with Amsoil 20/50

Is "Amsoil" related to "Amway"?

Because their marketing approaches certainly seem similar.

Note, everything I've ever read about Amsoil products indicates that they are excellent products. It's just their marketing techniquest that spook me a little.

Anyway, I'm a Redline guy through and through. Show me some something better, I'll use it.

No one has yet, though.

Brian, It's like asking someone to change soda. Coke or Pepsi, It is what it is. Keep using what you feel is best, No one can change your mind, Right?

I do think some of the synthetics are so close in specs that it would not make a lot of difference. Same with the dinos, they are far better than the oil on offer when these bikes were new. When I lived in Greenville Maine as a kid the best oil I could get was the oil we used in Cessnas. There was not a lot of oil that met the specs available in the sticks.