Who's using FULL synthetic oil in their street bike?

**p.dath** · 10th October 2009, 17:55

Check out this thread about the subject:

http://www.kiwibiker.co.nz/forums/showthread.php?t=104079

In particular check out this post by peasea:
http://www.kiwibiker.co.nz/forums/sh...5&postcount=14
Where they refer everyone to this article:
http://www.vfrworld.com/tex_vfr/tech/oil.htm

**98tls** · 10th October 2009, 18:00

Originally Posted by p.dath

This is outside my area of knowledge, but many bike mechanics on here have commented that they have pulled apart engines that have run on full synthetic oil, and the engine wear has been almost undetectable.

Rest assured it must be so then,aint the intereweb wonderful,ive enjoyed many of Carl Fogartys posts on cornering techique.

**mowgli** · 10th October 2009, 18:04

Triumph Speed Four using manufacturer recommended fully synth Mobil 1 Racing 4T since run-in. She's done 82k in four years on street and track. No sign of stopping any time soon.

**Gremlin** · 10th October 2009, 18:06

Yeppers, my KTM runs on fully synthetic Motorex... and has done since brand new... factory specs for it.

**doc** · 10th October 2009, 18:17

Originally Posted by Fatjim

I've always used a good quality diesel engine oil. However, I've never owned an il4.

Ive got a Hardly that Ive done 80k km on and have used only Mobil I from Repco since new. ( None of the V-twin stuff) . Always used sportrans in the primary. Never had a problem. HD advised not to use synthethic oils cos of "Bearing skate" FFS the manual recomends particular oils, but if not available use Diesel engine oil.

**vifferman** · 10th October 2009, 18:17

Originally Posted by p.dath

Check out this thread about the subject:
Where they refer everyone to this article:
http://www.vfrworld.com/tex_vfr/tech/oil.htm

Huh.
Forgot about that - read it years ago when I was on another VFR list. Mike Guillory was a frequent poster.

**Tony.OK** · 10th October 2009, 18:24

A good option worth trying for the notchy Honda box is Spectro Gold semi, it worked brilliantly in my VTR (tractor gearbox), but let you know when the oil was past its best going notchy again after 4-5kms.

**98tls** · 10th October 2009, 18:37

Originally Posted by doc

Ive got a Hardly that Ive done 80k km on and have used only Mobil I from Repco since new. ( None of the V-twin stuff) . Always used sportrans in the primary. Never had a problem. HD advised not to use synthethic oils cos of "Bearing skate" FFS the manual recomends particular oils, but if not available use Diesel engine oil.

One of the few great things about the interweb and motorcycles is the oil threads

**Motu** · 10th October 2009, 18:43

I am using Silkolene Pro 4 15/50 in my airhead,the best ester synthetic motorcycle oil you can get....just because I had some to use up.

I haven't noticed any clutch slip,and the gearbox changes the same as it always has....

**AllanB** · 10th October 2009, 19:14

Good replies KBers.

Triumphs use of Mobil 4T (the Motorcycle specific equivalent of Mobil 1) is interesting in that they produce engines in the lower range of HP (unstressed) to high end screamers.

A bloke in a bike shop said the other day - "absolutely no harm will be done by using a full other than to your wallet!"

Did you all notice I did not ask what oil brand was the best

- Every bike shop in Christchurch appears to use a different brand of oil and they are all "top stuff mate"

And they probably are.