|
Author |
Message |
droog |
This post is not being displayed .
|
droog Spanner Monkey
Joined: 03 Dec 2019 Karma :
|
|
Back to top |
|
You must be logged in to rate posts |
|
|
Islander |
This post is not being displayed .
|
Islander World Chat Champion
Joined: 05 Aug 2012 Karma :
|
Posted: 13:44 - 11 Aug 2021 Post subject: |
|
|
I use Comma Eurolite which is a semi-synthetic. I've never had a problem with it TBH. |
|
Back to top |
|
You must be logged in to rate posts |
|
|
droog |
This post is not being displayed .
|
droog Spanner Monkey
Joined: 03 Dec 2019 Karma :
|
|
Back to top |
|
You must be logged in to rate posts |
|
|
blurredman |
This post is not being displayed .
|
blurredman World Chat Champion
Joined: 18 Sep 2010 Karma :
|
Posted: 14:32 - 11 Aug 2021 Post subject: |
|
|
To be fair, I do use 10w40 semi MA2 on my bike when the 'oil change' occurs.
But the bike burns so much, that between the oil changes I top up the burnt oil with 20w50 mineral in the summer, and 15w40 mineral in the winter only because that's what I have. Basically whatever is cheap and on offer I buy. £3 for 2litre here, £10 for 5litres there.. When there's a deal, I buy it and bulk up.
At a pint burnt every 3 to 4 hundred miles, cheap is the way to go for me!
The other bikes use transmission oil so they're not much of a bother for annual changing. ____________________ CBT: 12/06/10, Theory: 22/09/10, Module 1: 09/11/10, Module 2: 19/01/11
Past: 1991 Honda CG125BR-J, 1992 (1980) Honda XL125S, 1996 Kawasaki GPZ500S.
Current: 1973 MZ ES250/2 - 17k. , 1979 Suzuki TS185ER - 9k, 1981 Honda CX500B - 91k, 1987 MZ ETZ250 (295cc) - 38k, 1989 MZ ETZ251 - 49k |
|
Back to top |
|
You must be logged in to rate posts |
|
|
droog |
This post is not being displayed .
|
droog Spanner Monkey
Joined: 03 Dec 2019 Karma :
|
|
Back to top |
|
You must be logged in to rate posts |
|
|
arry |
This post is not being displayed .
|
arry Super Spammer
Joined: 03 Jan 2009 Karma :
|
|
Back to top |
|
You must be logged in to rate posts |
|
|
c_dug |
This post is not being displayed .
|
c_dug Super Spammer
Joined: 04 Sep 2007 Karma :
|
|
Back to top |
|
You must be logged in to rate posts |
|
|
redeem ouzzer |
This post is not being displayed .
|
redeem ouzzer World Chat Champion
Joined: 06 Oct 2015 Karma :
|
|
Back to top |
|
You must be logged in to rate posts |
|
|
arry |
This post is not being displayed .
|
arry Super Spammer
Joined: 03 Jan 2009 Karma :
|
|
Back to top |
|
You must be logged in to rate posts |
|
|
xX-Alex-Xx |
This post is not being displayed .
|
xX-Alex-Xx World Chat Champion
Joined: 12 Sep 2019 Karma :
|
|
Back to top |
|
You must be logged in to rate posts |
|
|
droog |
This post is not being displayed .
|
droog Spanner Monkey
Joined: 03 Dec 2019 Karma :
|
Posted: 16:33 - 11 Aug 2021 Post subject: |
|
|
arry wrote: | On my Enfield, ironically, the owners all seem to use Silkolene fully synthetic. I mean.... LOL??! |
Ha!, that does seem like massive overkill
c_dug wrote: | I don't know what that means, I just stick fully synth in because I ride fairly hard and in my head it feels like it will offer better lubrication. |
Yeah, I heard that fully synth is preferred by a lot of track riders where the engine and gearbox are being used to the max.
Mylarballoonsfan wrote: | For four strokes I use whatever semi synth happens to be on offer. This includes in my GSXR400 race bike which revs to 15500 rpm. |
Yeah, I'm sure that most modern, decent semi-synths are well up to the job.
xX-Alex-Xx wrote: | Usually aim for full synth, but have no issue with semi. It's changed every 3-4k anyway so not like I need it to last forever. |
I was reading that fully synth can cope with longer service intervals, but changing every 4k is a good rule to follow regardless. |
|
Back to top |
|
You must be logged in to rate posts |
|
|
MCN |
This post is not being displayed .
|
MCN Super Spammer
Joined: 22 Jul 2015 Karma :
|
Posted: 18:44 - 11 Aug 2021 Post subject: |
|
|
OEM recommended Synthetic.
Specifically Castrol Power 1 Racing 5w 40.
Both bikes get it.
OEM had Since changed allegiance to another Brand. The other brand is now the best oil to use in your Beemr. Whankirs. ____________________ Disclaimer: The comments above may be predicted text and not necessarily the opinion of MCN. |
|
Back to top |
|
You must be logged in to rate posts |
|
|
Tdibs |
This post is not being displayed .
|
Tdibs Traffic Copper
Joined: 16 Jan 2015 Karma :
|
|
Back to top |
|
You must be logged in to rate posts |
|
|
Fisty |
This post is not being displayed .
|
Fisty Super Spammer
Joined: 11 Apr 2007 Karma :
|
|
Back to top |
|
You must be logged in to rate posts |
|
|
Nobby the Bastard |
This post is not being displayed .
|
Nobby the Bastard Harley Gaydar
Joined: 16 Aug 2013 Karma :
|
|
Back to top |
|
You must be logged in to rate posts |
|
|
to v or not to v |
This post is not being displayed .
|
to v or not to v World Chat Champion
Joined: 24 Nov 2020 Karma :
|
|
Back to top |
|
You must be logged in to rate posts |
|
|
Fizzer Thou |
This post is not being displayed .
|
Fizzer Thou World Chat Champion
Joined: 06 Aug 2011 Karma :
|
|
Back to top |
|
You must be logged in to rate posts |
|
|
Simon13245 |
This post is not being displayed .
|
Simon13245 Borekit Bruiser
Joined: 19 Jun 2021 Karma :
|
|
Back to top |
|
You must be logged in to rate posts |
|
|
ThatDippyTwat |
This post is not being displayed .
|
ThatDippyTwat World Chat Champion
Joined: 07 Aug 2016 Karma :
|
|
Back to top |
|
You must be logged in to rate posts |
|
|
JackButler |
This post is not being displayed .
|
JackButler Traffic Copper
Joined: 11 Nov 2019 Karma :
|
|
Back to top |
|
You must be logged in to rate posts |
|
|
wr6133 |
This post is not being displayed .
|
wr6133 World Chat Champion
Joined: 31 Dec 2013 Karma :
|
|
Back to top |
|
You must be logged in to rate posts |
|
|
arry |
This post is not being displayed .
|
arry Super Spammer
Joined: 03 Jan 2009 Karma :
|
|
Back to top |
|
You must be logged in to rate posts |
|
|
arry |
This post is not being displayed .
|
arry Super Spammer
Joined: 03 Jan 2009 Karma :
|
|
Back to top |
|
You must be logged in to rate posts |
|
|
Zen Dog |
This post is not being displayed .
|
Zen Dog World Chat Champion
Joined: 11 Aug 2004 Karma :
|
Posted: 09:01 - 12 Aug 2021 Post subject: |
|
|
ThatDippyTwat wrote: | Viffers and 125's are not fussy.
Cheap JASO MA2 10W40 semi synth. Usually Westway. Changing it regularly (4K on Viffer, 2K on 125) is fairly cheap and decent insurance, and happily is about 5L in volume. |
I tried fully synth on my 750 years ago and it didn't sound right at all, it had a really noticable "tappy" sound. Switched back to semi and it was instantly fine again. And actually, thinking about it, my recently purchased 800 sounds the same way, I wonder if the previous owner has put fully synth in it? ____________________ Current - '94 VFR750FR, '00 VFR800FI Previous - '10 Street Triple R, '92 MZ ETZ301, '05 TTR250, NSR125R, KMX125, "Honda" Win (chinese copy of an old Honda design with a C90 engine)
My bike trip around S.E. Asia 2010/2011 |
|
Back to top |
|
You must be logged in to rate posts |
|
|
weasley |
This post is not being displayed .
|
weasley World Chat Champion
Joined: 16 Oct 2010 Karma :
|
Posted: 10:20 - 12 Aug 2021 Post subject: |
|
|
In truth very few OEMs demand "synthetic" or "semi-synthetic" or whatever - they usually ask for a viscosity grade (eg 10W-40, 15W-50 etc) and a performance specification (API SH, JASO MA etc). It is up to the oil companies to come up with whatever formulation will hit the specification's test limits and this includes what type of base oil/s is/are used. The use of base oil descriptors is also somewhat subjective and not defined in any specification or other protocols so is best considered to be interesting information, but I wouldn't use it as a primary selection criterion.
To answer the question, I use a full-synthetic oil in mine because to get a 10W-50 with the performance needed that's what it takes; my bike runs hot, hence the need for a higher viscosity (some run 10W-60 in them). In my previous bike I used a 10W-40 which happened to be semi-synthetic.
As for how the base oil affects the engine's running - any noticeable effect will not strictly be because of the base oil type (eg synthetic vs semi) but will be because of the viscosity and therefore oil film thickness of the oil at a given temperature. Fully-synthetic oils tend to have a higher viscosity index (VI), meaning their viscosity changes less with temperature compared to a semi. The SAE viscosity grades are essentially determined at 100°C - so at this temperature you can expect any oil that is 10W-40 to be approximately the same viscosity. However if you get hotter than 100°C a synthetic oil will tend to be thicker than a semi; go cooler and it will be thinner than the semi. These differences may be enough to notice, particularly on viscosity-sensitive engines.
What a synthetic oil does offer over a semi is better cold flow, better high temperature oil films, reduced oxidation hence longer oil life and reduced volatility. This comes at a cost though, to your wallet - synthetic base oils are more expensive than mineral base oils (I mention mineral base oils because that's what a semi-synthetic oil contains, a mix of some synthetic and some mineral).
Where a choice between semi or fully synthetic exists (eg at 10W-40 there are plenty of options) it comes down to use - the fully-synthetic oils will be targeted at high performance use (track days for example) because of the VI benefit and thermal resistance I mentioned before. ____________________
Yamaha XJ600 | Yamaha YZF600R Thundercat | KTM 990 SMT | BMW F900XR TE |
|
Back to top |
|
You must be logged in to rate posts |
|
|
Old Thread Alert!
The last post was made 2 years, 258 days ago. Instead of replying here, would creating a new thread be more useful? |
|
|
|