Fully synthetic oil versus semi synthetic oil

[Bettagetabrettabolti]

Sold on the Groundsman after seeing Edens fantastic video - man can that scoot go!
Bolti

[Andyf]

It is a bone of contention and many schools of thought and opinion on this issue, I did remember seeing a quite good article pointing out that a standard Lambretta or Vespa engine really wasn't designed to take synthetics as the oils are thinner and don't stick to the liners and bearings well enough on a standard engine as well enough as a good mineral oil would.

is semi-synth deemed thick enough?

[burnside]

I've been using Groundsman in my GT200 kit, no lubrication issues whatsoever

[coaster]

....is semi-synth deemed thick enough?

It has nothing to do with viscosity, just the mix of mineral and synthetic components used to make it and the specification that it meets. In the case of both the Lubtech Extol Fully Synth and the Rockoil Groundsman Semi Synth, they both meet the required standards. Use either with complete confidence. I've clocked up a LOT of miles on both but will ne sticking with the Groundsman from now on due to it being as cheap as chips and well and truly proven by Eden

[IaninDorset]

There is of course the question of ethanol creeping into our fuels and I read somewhere in the US on a forum a while back that they had to start using semi-s and full because the ethanol in their fuels just wasted the mineral oil en route to the barrel and thus reduced its lubricating ability. America has a high ethanol content in a lot of their fuels but I have seen a couple signs up here in Britain about some fuels containing it so its something to find out about.

Whether there is truth in this or not I cannot say, I do use Rock Oil city because it was on offer and you kind of get used to a particular brand.

[Andyf]

It is a bone of contention and many schools of thought and opinion on this issue, I did remember seeing a quite good article pointing out that a standard Lambretta or Vespa engine really wasn't designed to take synthetics as the oils are thinner and don't stick to the liners and bearings well enough on a standard engine as well enough as a good mineral oil would

....is semi-synth deemed thick enough?

It has nothing to do with viscosity,

uh?

[Dazza]

Hi, my name is Daz and I'm also a long term groundsman oil user...

[jonoy]

i will be to when it finally arrives been waiting over a week

[coaster]

It is a bone of contention and many schools of thought and opinion on this issue, I did remember seeing a quite good article pointing out that a standard Lambretta or Vespa engine really wasn't designed to take synthetics as the oils are thinner and don't stick to the liners and bearings well enough on a standard engine as well enough as a good mineral oil would

....is semi-synth deemed thick enough?

It has nothing to do with viscosity,

uh?

Viscosity = thickness of the oil and it doesn't make any difference to it's ability to lubricate, it gets heavily diluted by petrol after all

[sunrisemac]

Synthetic and semi-synthetic both provide better protection at low temperature, which is when most wear is likely to occur, i.e. start up from cold, let alone the tremendous protection that is provided to high speed running engines. We put small amounts (0.5%) of fully synthetic oil into 4-stroke supercharged engines that run on any fuel mixture containing methanol.

[joe swoonara]

Rock oil Groundsman is the " dogs bollocks " been using it for about 4-5 yrs ,well ever since Eden 1st posted about it never had one bit of trouble with it ............in fact me and a group of mates buy the stuff in bulk , we just had 13 x 25ltr barrels delivered such is our confidence in the stuff

[sunrisemac]

I'm definitely converted to Groundsman

[joe swoonara]

i bought ours from COLIN BUSH GARDEN MACHINERY he was cheaper than Garritts
Told him we were a Gardening club ,we use it in our Rotorvators

[Toddy]

i bought ours from COLIN BUSH GARDEN MACHINERY he was cheaper than Garritts
Told him we were a Gardening club ,we use it in our Rotorvators

^ ^

[Andyf]

It is a bone of contention and many schools of thought and opinion on this issue, I did remember seeing a quite good article pointing out that a standard Lambretta or Vespa engine really wasn't designed to take synthetics as the oils are thinner and don't stick to the liners and bearings well enough on a standard engine as well enough as a good mineral oil would

....is semi-synth deemed thick enough?

It has nothing to do with viscosity,

Viscosity = thickness of the oil and it doesn't make any difference to it's ability to lubricate, it gets heavily diluted by petrol after all

"thinner" v "thickness". I think I get it.
acknowledging that it doesn't make financial sense, is there any detriment to using Synthetic in a standard or mildly-tuned engine?


it may be a silly question but..............is it only composite post-mix that coats the components or is there an element of separation as the heavier/stickier particles hit the metal surfaces?

[peejay]

I have just ordered 20L of the Exol Lubetech Fully Synth for £76 using the discount code se001. Works out at £3.80 per litre with free postage. I think anyone will find that hard to beat for a top spec' fully synth racing oil.

Rich'

hi Rich
i've looked on line to order the oil from a lubetech agent, their price is £84. 90p with free postage.
i cannot see where you can add the discount code but then i'm not the smart cookie

[mickyb]

It's on the other forum!!

[peejay]

It's on the other forum!!

sorry Mike, you've lost me there, i have the code just don't know where to post it

[rossclark]

I think you put it in as you check out

[mainstand]

I use groundsmans as well. Get it from Sheffield posted, work out cheap as chips. Done 4,500 miles this year using the stuff with no issues. Mind you when I stripped my top end down the other day it seemed a little dry for my liking, but that maybe because I have a reed block, so no waste.