Tonk Posted May 24, 2006 Share Posted May 24, 2006 need to get some engine oil for my 200tdi, phone motor factors and asked for 15/40 semi-synthetic, he said he hasn't got any and its not made anymore, he offered mineral 15/40 and thats it. am i askin for the right spec oil? can i run a different spec? or is he just a numpty? Quote Link to comment Share on other sites More sharing options...
v8bertha Posted May 24, 2006 Share Posted May 24, 2006 The old LR service parts guide we have kickin about makes no distinction between the 2, it just says 15W40. All the stuff that gets used at you-know-where is mineral. D B) Quote Link to comment Share on other sites More sharing options...
muddyplugger Posted May 24, 2006 Share Posted May 24, 2006 I use 5W/30 semi-synthetic in the 200tdi and the TD5. Quote Link to comment Share on other sites More sharing options...
Hillbilly Raider Posted May 24, 2006 Share Posted May 24, 2006 See! its not me getting the order wrong every time you send me shopping for the stuff! Quote Link to comment Share on other sites More sharing options...
GBMUD Posted May 24, 2006 Share Posted May 24, 2006 Halfrauds sell it in a gold can - that might be 10W/40 but it is what I use. Chris Quote Link to comment Share on other sites More sharing options...
Tonk Posted May 24, 2006 Author Share Posted May 24, 2006 so it seems that just about anything will do Quote Link to comment Share on other sites More sharing options...
Mark90 Posted May 24, 2006 Share Posted May 24, 2006 Halfrauds sell it in a gold can - that might be 10W/40 but it is what I use.Chris Aye good quality oil is Halfords stuff. Better than some of the big names, and cheaper too. Quote Link to comment Share on other sites More sharing options...
Bull Bar Cowboy Posted May 24, 2006 Share Posted May 24, 2006 Mark, 15/40 Castrol GTD Magnatec is a semi ………….. 10/40 API CF, ACEA B3 Most places sell it ................ the last lot I got was Halfrauds Ian Quote Link to comment Share on other sites More sharing options...
will_warne Posted May 24, 2006 Share Posted May 24, 2006 Mark,15/40 Castrol GTD Magnatec is a semi ………….. 10/40 API CF, ACEA B3 Most places sell it ................ the last lot I got was Halfrauds Ian That's what I use and never had issues Quote Link to comment Share on other sites More sharing options...
Tonk Posted May 24, 2006 Author Share Posted May 24, 2006 That's what I use and never had issues apart from one blown up 300 tdi Quote Link to comment Share on other sites More sharing options...
GBMUD Posted May 24, 2006 Share Posted May 24, 2006 apart from one blown up 300 tdi Chris Quote Link to comment Share on other sites More sharing options...
BogMonster Posted May 24, 2006 Share Posted May 24, 2006 I use Castrol Tection 15w40 mineral oil in the 300Tdi, and Castrol GTX Magnatec 5w30 in the V8 (the Thor V8s specify 5w30 no idea why though) think the latter one is fully synthetic. Quote Link to comment Share on other sites More sharing options...
western Posted May 24, 2006 Share Posted May 24, 2006 15W/40 is the correct grade for a 200Tdi Quote Link to comment Share on other sites More sharing options...
jules Posted May 24, 2006 Share Posted May 24, 2006 Aye good quality oil is Halfords stuff. Better than some of the big names, and cheaper too. I'm with Mark on this And they have a list telling you what each engin can run one if your feeling rich or the cheepest if you not so flush. Good with a V8 because they tell you what the change over piont is from 20/50 to 5/40 and 0/30 Quote Link to comment Share on other sites More sharing options...
SiWhite Posted May 24, 2006 Share Posted May 24, 2006 I tried running a thinner oil (5W30 IIRC) and had no end of problems with the oil pressure light staying on when the engine was up to heat. Now switched back to 15W40 and no further problems. Quote Link to comment Share on other sites More sharing options...
Hybrid_From_Hell Posted May 24, 2006 Share Posted May 24, 2006 apart from one blown up 300 tdi 2 ROTFLMAO I think that would count as a "problem" Nige Quote Link to comment Share on other sites More sharing options...
jules Posted May 24, 2006 Share Posted May 24, 2006 I tried running a thinner oil (5W30 IIRC) and had no end of problems with the oil pressure light staying on when the engine was up to heat. Now switched back to 15W40 and no further problems. My TD5 disco is good as gold on 5W30 Quote Link to comment Share on other sites More sharing options...
BogMonster Posted May 25, 2006 Share Posted May 25, 2006 Jules the Td5 is supposed to have 5w30 though, as is the Thor V8 my Discovery has. I don't think I would put it in any of the older engines if what is specified is 15w40, not unless you lived inside the Arctic circle or something anyway! Quote Link to comment Share on other sites More sharing options...
white90 Posted May 25, 2006 Share Posted May 25, 2006 15w40 Comma Semi synthetic purchase in 20 litre barrels this one: http://www.commaoil.co.uk/Product%20Pages/.../eurodiesel.htm 2 Discoveries a Defender and a Freelander all run on it Quote Link to comment Share on other sites More sharing options...
siggy Posted May 25, 2006 Share Posted May 25, 2006 Mineral is the thickest oil at running temp semi-synth next synthetic is the thinnest if in doubt ring your stealer and then go buy the cheapest last time I needed oil of my TD (mineral) it was the dealers that were the cheapest so I bought it there Quote Link to comment Share on other sites More sharing options...
rick Posted May 26, 2006 Share Posted May 26, 2006 Mineral is the thickest oil at running tempsemi-synth next synthetic is the thinnest if in doubt ring your stealer and then go buy the cheapest last time I needed oil of my TD (mineral) it was the dealers that were the cheapest so I bought it there Siggy, Siggy, Siggy, how on earth do these hoary old myths perpetuate.......... Let us compare three diesel oils, one a full mineral 15W-40, in this case Mobil Delvac MX, the next a semi-synthetic 10W-40, Mobil MX Extra and lastly their full synthetic cousin in 5W-40, Mobil Delvac 1. I'm using these as I have the specs in the 'puter. First things first, actual viscosity of warm engine oils is measured in centiStokes (cSt). To be classified as an xW-40, our oil must have a viscosity in the range of 12.5 cSt @ 100*C to 16.3 cSt @ 100*C. (there are other measurements, such as the shear rate [HTHS] that are also specified and I'll ignore for the moment) Now lets look at our three examples at 100*C. Delvac MX is 14.2 cSt Delvac MX Extra is 14.2 cSt Delvac 1 is 14.8 cSt OK, our Delvac 1 is the thickest (just) of these three at 100*C, but wait, there's more ! There is a measure of how an oil thins (reduces viscosity) with increased temperature and it is called its viscosity index. The higher the number, the less it thins. Delvac MX VI 138 Delvac MX Extra VI 135 Delvac 1 VI 151 These numbers show that as the oil temperature exceeds 100*C, the Delvac 1 will thin less than the other two oils. This is a very simplified explanation, and I've deliberately not tried to explain what happens at the other end of the scale to avoid further confusion. Quote Link to comment Share on other sites More sharing options...
GBMUD Posted May 26, 2006 Share Posted May 26, 2006 This seems a good moment to roll this out again Chris Quote Link to comment Share on other sites More sharing options...
Cartman Posted May 26, 2006 Share Posted May 26, 2006 Tonk, Going through as much oil as you do get it in bulk. Far cheaper. Check these guys out ----> Difflock Oils page Quote Link to comment Share on other sites More sharing options...
BogMonster Posted May 26, 2006 Share Posted May 26, 2006 Tonk,Going through as much oil as you do get it in bulk. Far cheaper. I hope you are not suggesting Mr Tonk's motor is less than entirely oil proof? Quote Link to comment Share on other sites More sharing options...
rick Posted May 26, 2006 Share Posted May 26, 2006 This seems a good moment to roll this out againChris Chris, there's some good information on that link, some things ignored/overlooked, (eg. two major groups of oils, Group V, which comprise Synthetic base oils such as the esters [di and polyol, think Redline, Silkolene, Fuchs, Motul, et al and generally blended in various proportions with PAO's to give certain characteristics] and alkylated napthalenes, which have supplanted esters in Mobil 1, and Group III oils, which are derived from mineral oils, but have been severely hydrocracked, refining them further and mimicking a lot of the characteristics of a synthetic for less production cost, and often labelled as a synthetic in the US and Oz. In Europe these are labelled such as 'Technosynthese' or 'Molecularly Converted') some things I disagree with and some absolute hokum such as PAO's being derived from mineral oil (they are actually derived from ethylene gas) Quote Link to comment Share on other sites More sharing options...
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