OMG!! Not another oil thread!

[SVboy]

I have a k7 600 gixxer. Just had its first 1000k service. So-the shop uses ELF oil-no problem with that. Now-I will service it from now on, and I like Castrol products. I have always used them in my cars, and feel they are consistent and easily available. I have seached "oils" in this forum and decided that a high quality semi synthetic bike oil, in the viscosity recommended by the manual will be fine for what I need. Do people recommend the appropriate Castrol bike oil as good? I have no issues going to Motul, or sticking with Elf etc, but would like to use Castrol.{bit cheaper-easy to get from Supacheap} Your opinions please, particularly if you own a similar bike.......

[NZsarge]

I have a k7 600 gixxer. Just had its first 1000k service. So-the shop uses ELF oil-no problem with that. Now-I will service it from now on, and I like Castrol products. I have always used them in my cars, and feel they are consistent and easily available. I have seached "oils" in this forum and decided that a high quality semi synthetic bike oil, in the viscosity recommended by the manual will be fine for what I need. Do people recommend the appropriate Castrol bike oil as good? I have no issues going to Motul, or sticking with Elf etc, but would like to use Castrol.{bit cheaper-easy to get from Supacheap} Your opinions please, particularly if you own a similar bike.......

I currently have a Castrol semi-synthetic in my bike and it's ok, up until the last oil change I had been running Motul 5100, also a semi. I've always run Castrol products in my cars and have seen for myself how good they are, big fan.
However I have found after trying Castrol in the bike it has a notchier around the 1st, 2nd and 3rd gears and I swear the noise from the motor is a little more metalic if that makes sense. I don't think this is bad per se, it could be down to differing viscosities between the two different oils but i'm going back to Motul, just feel a little more comfortable with the 5100 for some reason. Must say though it has not changed my mind about Castrol in the slightest, still think it's a top oil.

[SVboy]

Cheers Sarge-this is the kind of input I wanted, and can relate to..

[justsomeguy]

Motul 5100 10W40

[NZsarge]

Cheers Sarge-this is the kind of input I wanted, and can relate to..

No worries.

[merv]

Use Castrol GPS the semi synthetic oil in all our bikes and no worries at all and a good price and easy to buy because its stocked at Repco and Supercheap so don't have to go far to get any though have to make sure I have a few filters in my cupboard first.

[The Stranger:Me]

However I have found after trying Castrol in the bike it has a notchier around the 1st, 2nd and 3rd gears and I swear the noise from the motor is a little more metalic if that makes sense.

Maybe a Yamaha thing? I had the same issues with the Fazer changing 1-2 and 2-3. That had Motul 15W50 in it from the shop.
I am now running Synthetic AMSOIL 10W40 and the gearbox is near as smooth as the GSXR. It's a little dearer, but being full synthetic, I will leave the oil in for the full 10,000 km instead of changing at 5,000 as i normally would.

[klyong82]

Maybe a Yamaha thing? I had the same issues with the Fazer changing 1-2 and 2-3. That had Motul 15W50 in it from the shop.
I am now running Synthetic AMSOIL 10W40 and the gearbox is near as smooth as the GSXR. It's a little dearer, but being full synthetic, I will leave the oil in for the full 10,000 km instead of changing at 5,000 as i normally would.

Heard alot good thing bout AMSOIL on the Fireblade forums but yet to try it. Have yet to find a shop that sell AMSOIL maybe I am not looking hard enough

[Pancakes]

AFAIK the multi oils have a base of the lowest viscosity and long chain molecule additives to give the high temp viscousity. From day one the long chains are being broken und the high temp viscousity is going down till its at the base weight. Tried diesel oils? Anything for allison clutches won't make your bike clutch slip.

[The Stranger:Me]

AFAIK the multi oils have a base of the lowest viscosity and long chain molecule additives to give the high temp viscousity. From day one the long chains are being broken und the high temp viscousity is going down till its at the base weight. Tried diesel oils? Anything for allison clutches won't make your bike clutch slip.

You are quite right when it comes so called semi synthetic oils. A 10W40 semi synthetic is a 10 weight disosaur base oil with additives that break down. Not so though with full synthetics.
The larger the multiple between the base (winter) weight and the high temp weight the more additives are used and the quicker it breaks down. A 10W40 (4 x base weight) will contain a lot more additive (the part that goes bad quickest) than a 15W40 (2.5 X base weight).

Diesel oil = good. Usually 15W40 and contains similar additives to motorcycle oils.

[The Stranger:Me]

Heard alot good thing bout AMSOIL on the Fireblade forums but yet to try it. Have yet to find a shop that sell AMSOIL maybe I am not looking hard enough

It's rare as rocking horse shit.

JDM Lubricants
118D Railside ave
Henderson
PH 8383833

[SVboy]

Yes, the info we have on here is quite scientific re good diesel oil and full synthetics, however I tend to be a bit of a mainstream sheep. People are saying Motul 5100-is that full or semi?

[Pixie]

Since Elf oil has been on the market,elves have been an endangered species.

It's not real oil,anyway.It's just nasal mucus

[Pixie]

You are quite right when it comes so called semi synthetic oils. A 10W40 semi synthetic is a 10 weight disosaur base oil with additives that break down. Not so though with full synthetics.
The larger the multiple between the base (winter) weight and the high temp weight the more additives are used and the quicker it breaks down. A 10W40 (4 x base weight) will contain a lot more additive (the part that goes bad quickest) than a 15W40 (2.5 X base weight).

Diesel oil = good. Usually 15W40 and contains similar additives to motorcycle oils.

Any Multigrade oil,whether it's fully synthetic or semi or just plain mineral oil,has viscosity index improvers that will eventually break down and reduce the oil to it's base winter viscosity.
The quality and durability of the V.I. additive package is reflected in the price of the oil.

[SPman]

After running Motul on the SP, I changed to Elf and found the gearbox a tad smoother and changes even easier. Last Castrol I used was in Mstriumphs 650 Bonneville..........