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Alex1976



Member Since: 23 Jan 2013
Location: Buckingham
Posts: 596

England 
Two Stroke in Diesel problems
Recently, for the last few months, I have been having some problems starting the Defender. It was very slow to turn over, and the colder the weather the harder it was to start, even with glow plugs on. It would finally start after a few attempts and then run normally. It would restart fine while warm, but if the engine cooled down fully then it was back to difficult starting.

I was convinced it was a duff battery, strarter or poor earth. Went through all the electrical checks and nothing improved. I was stumped and could not work out why I had these issues.

I have been using two stroke mixed in with each tank of diesel, on a ratio of 1:200 and have enjoyed the improved smoothness and quieter engine this has provided, however I ran out of two stroke and have been running on Shell V Power for the last 3 tanks.

Now it may just be a big coincidence, but in the last couple of weeks with no two stroke my starting issue has disappeared and I now get instant starting even on a cold morning with no glow plugs.

Is it conceivable that the two stroke was causing the diesel to thicken sufficiently that it was causing the engine to turn over slowly and be difficult to start? In a way I hope it is as that means I have found the issue and cured it. I have not heard of anyone else encountering these problems, but I know there is a school of thought that says additives such as two stroke should not be used and just stick to good quality diesel.

I did come across an internet article that claims that two stroke is not good for your engine as it has high levels of zinc and this clogs the injectors over time.

Just putting it out there.....
Post #671517 17th Dec 2017 6:50pm
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GREENI



Member Since: 22 Aug 2010
Location: staffs
Posts: 10383

United Kingdom 
2-stroke....

It's another forum lead myth..... (Like Pumas are better than td5's)



Hahahaha
Post #671520 17th Dec 2017 7:02pm
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custom90



Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20637

United Kingdom 
Well personally I'd never use it, use a proper additive such as Millers.
In-fact that maybe you best bet, from now onwards to clean everything up. TheThunder Rolls🇬🇧🇺🇸
⛽️🛢️⚙️🧰💪
Post #671523 17th Dec 2017 7:10pm
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ian series 1



Member Since: 17 Nov 2014
Location: south
Posts: 3127

United Kingdom 2008 Defender 90 Puma 2.4 CSW Bonatti Grey
Have to agree!
what is the point in petrol company's refining quality diesel, car manufacturers developing precision Diesel engines,
If your going to whack a load of two stroke oil through it?

Quote....

The results of a study that the practice of dosing diesel with 2-stroke oil is surprisingly ineffective in terms of lubricity and cetane improvements. Engine performance, fuel consumption and emissions were also unchanged, however the use of 2-stroke oil in diesel is potentially harmful to modern diesel injection equipment. Trace amounts of zinc, an element which is found in most 2-stroke oils, are well known to cause injector nozzle fouling and the study measured high levels of injector fouling when the test engine was running on diesel dosed with 2-stroke oil. While the oil industry may not mind the additional revenue from the sale of 2-stroke oil with each tank of diesel, this study demonstrated that it is not in the best interest of the user to do so.

I know there will always be a debate about this, and many on here swear by it,
Personally I wouldn't bother... Wink 80" 80" 86" 88" 90"

Wanted, Forward Control Anything considered.
Post #671525 17th Dec 2017 7:13pm
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flydive



Member Since: 27 Aug 2015
Location: Lugano
Posts: 290

Switzerland 2015 Defender 90 Puma 2.2 Heritage Edition SW Grasmere Green
I do not see how 2 stroke oil would make the engine turn over slowly
Post #671527 17th Dec 2017 7:20pm
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Alex1976



Member Since: 23 Jan 2013
Location: Buckingham
Posts: 596

England 
Until recent events I was certainly convinced that it was beneficial to use 2 stroke as the engine felt smoother, however I am thinking I will not put anymore in again and just use premium diesel.
Post #671528 17th Dec 2017 7:21pm
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Alex1976



Member Since: 23 Jan 2013
Location: Buckingham
Posts: 596

England 
Fly drive - the only thing I could think of was that the diesel was ‘waxing’ with the 2 stroke added in the cold weather and making it difficult to turn the FIP due to pressure, hence making the engine hard to turn over. That’s my laymans diagnosis any way. Someone who knows what they are talking about may have a better theory.
Post #671529 17th Dec 2017 7:24pm
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zsd-puma



Member Since: 09 Aug 2016
Location: Kent
Posts: 2720

United Kingdom 2010 Defender 110 Puma 2.4 USW Santorini Black
2-stroke might make it less willing to start, but i expect being slow to turn over was just because it was cold. Even with a new fully charged battery an engine will be more sluggish to turn over in freezing conditions than when it's warm.

I just use premium diesel, and not mess about with additives.
Post #671533 17th Dec 2017 7:37pm
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dgardel



Member Since: 30 Nov 2008
Location: Veneto (Heart & Head)
Posts: 3586

Italy 
flydive wrote:
I do not see how 2 stroke oil would make the engine turn over slowly


The only post with a correct deduction

I always use the 2SO also at -20 ° C with Arctic Premium diesel and I have covered 120.000km without any problem, indeed .... Discovery 5 td6 HSE Stornoway Gray Outback Engineering Limited Edition

IID Pro MV License
Post #671568 17th Dec 2017 9:21pm
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LR90XS2011



Member Since: 05 Apr 2011
Location: bickenhill
Posts: 3658

United Kingdom 2011 Defender 90 Puma 2.4 XS CSW Galway Green
use 2 stroke in my BM from new never had an issue 101000 miles running sweet DEFENDER 90 TDCI XS,

I hope everyone is well and your land rovers make you happy
Post #671569 17th Dec 2017 9:24pm
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Alex1976



Member Since: 23 Jan 2013
Location: Buckingham
Posts: 596

England 
Crying or Very sad may be my diagnosis was just a coincidence and the starting problem will return. I just thought it was too great a coincidence that the two happened together.
Post #671581 17th Dec 2017 9:44pm
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Zed



Member Since: 07 Oct 2017
Location: In the woods
Posts: 3350

United Kingdom 2010 Defender 110 Puma 2.4 XS CSW Santorini Black
ian series 1 wrote:
Have to agree!
what is the point in petrol company's refining quality diesel, car manufacturers developing precision Diesel engines,
If your going to whack a load of two stroke oil through it?

Post #671584 17th Dec 2017 9:49pm
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ericvv



Member Since: 02 Jun 2011
Location: Near the Jet d'Eau
Posts: 5816

Switzerland 2009 Defender 110 Puma 2.4 SVX Station Wagon Santorini Black
Many years ago, after reading on here about the so called benefits of 2SO, I asked the tecchies at my dealer about possible benefits of 2SO additives. They just started rolling their eyes and shaking their heads, asking me what I thought the benefits can be of adding a lubricating oil meant for mopeds running on gasoline.
So I'm permanently using BP Ultimate diesel for at least 8 or 9 years now, which here in Switzerland comes with zero % biodiesel content, an additional benefit. Seems to have all the additives a modern diesel engine and fuel tank can dream of. Distinctly better engine noise than the french supermarket diesels I used in my very early Defender days. My experience is that BP Ultimate is just what the doctor ordered. Thumbs Up
Eric


Click image to enlarge
 You never actually own a Defender. You merely look after it for the next generation.
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Post #671641 18th Dec 2017 4:12am
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AJC



Member Since: 30 Nov 2015
Location: Lancashire
Posts: 1366

United Kingdom 
2 years of 2 stroke in my TD5, Mondeo St TDci and D4 and 0 issues.
Post #671643 18th Dec 2017 5:33am
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williamthedog



Member Since: 29 Dec 2012
Location: south wales
Posts: 3441

2011 Defender 90 Puma 2.4 PU Tamar Blue
This is going to be one of these threads again Rolling Eyes Rolling with laughter
Post #671648 18th Dec 2017 6:42am
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