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synthetic oils

  • Thread starter Thread starter Anonymous
  • Start date Start date
slopoke said:
My bike definitely runs cooler with mobile one or syntec. I supose that indicates something ????
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My GS runs cooler on synthetic. Gear changes smoother. Extended change intervals (handy because a header has to be removed to change the filter). No significant leaks - apart from a couple of minor weeps which happen on dino oil anyway.

It's not a black and white issue.
http://www.motor-oil-bible.com
 
srivett said:
... the entire axle stub snaps off of the floating axles. Two wheels and a brake drum go bounding away.

Steve
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I was on an Interstate highway in NC near the Blue Ridge Pkwy and saw that happen. One of those Humongous Dumps, yes, I was on the bike. There were no accidents, but, to see a set of wheels bouncing across the highway is such a bizarrre sight that most drivers were so stunned they didn't comprehend the peril they were in...(me included!). No one took any evasive actiion and it was through the grace of God that those wheels didn't hit anyone and the truck didn't flip. Could have been brutally ugly!

And yes Steve, the mixmasters at the oil refineries use a special incantation when blending the oils. 8O :o It is similar to the chant you might have muttered if you've ever had a flat on the bike on the road!
 
Exactly Earl, mixing synthetic and regular gear oil causes things to seize. If you mix it in your differential your spider gears seize, if you mix it in your wheel hubs your wheels seize, etc.
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uhm...no. for synthetic oil to be used in cars it MUST carry the same standards as regular oil, therefor like all regular oils, they must mix together fine, synthetic oils MUST mix with regular oils. they mix with no problem at all.

i've done extensive research on synthetic oil for a class...and i wrote a 30 page report on it. i was hesistant to convert my motorcycle with 13,000 miles over to it, and its handled it great. i ran the same filter all year, changed teh synthetic twice and had no isses.

i was VERY hesitant to convert my car, which ran Pennzoil dino oil its whole life. i've done some gaskets on it, but didn't want the original 15 year old gaskets to go. but, after 2 months now, things are great...and i feel more comfortable with synthetic oil protecting the engine.

~Adam
 
srivett said:
Exactly Earl, mixing synthetic and regular gear oil causes things to seize. If you mix it in your differential your spider gears seize, if you mix it in your wheel hubs your wheels seize, etc.

I'm not sure how the manufacturers blend the oils but there most be something more to it than a bit of mixing.Steve
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I have my doubts that there is any special magic involved in the blending process. (more like a clever marketing ploy) I have read that mixing different types of grease and gear lube is not good. As far as mixing motor oils I believe the labeling states the syn is fully compatable with regular oils. I have been mixing them in my pick-up for 10 years. It now has 150k mi on it, runs like new and has never had any problems or leaks (if mixing was going to cause it to seize I think it would have happened by now)
 
synthetic oil

synthetic oil

personally i use amsoil 20w50 in my 83' gs750es and always will.
i am a big believer in synthetics, but they are not for everyone......
it is a big misconception that using synthetics will cause oil leaks where you didn't have them before. it is still oil regardless of it's synthetic properties. it stays fluid at much colder temps and stays together in hotter temps. perfect for air cooled engines. synthetics have an electrically charged molecule in them called esthers(i hoped i spelled that right) that will actually bond to metal engine parts. good for cold start ups!!
if you change your oil frequently then synthetic oil may not be for you. if you run your bike a little harder than most, then a good motorcycle approved synthetic oil is just the ticket your looking for...........
 
Synthetics do not cause leaks. Most of the sites (AMSOIL included) will warn that synthetics will not cover up existing defective seals if they exist because of their much better detergent cleaning problems. Most of the misconceptions of synthetics causing leaks come from the early days when there was compatability problems with oil seals.
 
dpep said:
From all I have been able to determine, special motorcycle oils are formulated specifically to decrease the load in your wallet.
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AMEN! I use the red cap oil, too (15W-50). Every bit of independent research I've read during many hours of research points to carefully selected car oil protecting as well as motorcycle specific oils. Certainly, a well-selected synthetic car oil will protect better than a conventional motorcycle specific oil.
 
KEITH KRAUSE said:
I never realized the leaking possibility by switching to synthetic oil in high mileage motors, so I learned something. :) I guess the one negative thing about synthetic oil is you'll have a tendency for more leaking as your motor gets older.
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Or, will the superior properties of synthetic oil preserve your seals, gaskets, and sliding bits so the motor lasts longer and leaks less? I'd always use (car) syn from end-of-break-in, given a choice. As to oil change intervals, I'm overcautious when I change at 2000 miles. I've corresponded with people who change at 200 miles!
 
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