im Axle Specialists

General Do the words "turbo diesel" on oil have no consequence?

Currently reading:
General Do the words "turbo diesel" on oil have no consequence?

Argonought

Argonought

It's about GO! not SHOW!
Written a guide
Joined
Sep 8, 2005
Messages
7,593
Points
1,070
Location
POOLE, Dorset
I ask because I've bought some oil for my JTD and it doesn't say "Turbo Diesel" on it.

I've always used "Castrol Edge Turbo Diesel 0W-30" rather than "Castrol Edge 0W-30". Now the former is no longer listed on the Castrol site and by all accounts is discontinued so one might assume they are really the same product but in different packaging :chin:

However, Halfords list the former as suitable for both petrol/diesel but the latter as only suitable for diesel (hence if true proving they can't be the same)

Furthermore, the listed specs. are slightly different providing more evidence that these are really different oils.


To add further confusion "Mobile 0W-40" has IDENTICAL listed specs. as "Mobile 0W-40 Turbo Diesel" which would tend to suggest they might be identical. However, the fact the specs. match doesn't in itself prove the oils ARE identical.

Anyone have any thoughts ?
 
Last edited:
I might well go for that (y)

One advantage of Mobil is they supply 5l cans rather the 4l that Castrol only provide.

As the JTD takes 4.7l (with a filter change) then that's ideal.
 
have been running normal mobil 1 0w-40 for 2 or 3 changes now(bought a few bottles from opie but they didnt do td version)but last bought at halfords as 25% off a while ago so i bought the mobil 1 0w-40 turbo diesel to try.i believe the main difference will be the detergent packs and possibly the ability to suspend the soot better for the td versions.
wont be changed till spring time now though.
quick glance at edge 5w-40 vs 5w-40 td shows a few differences on specs
http://www.opieoils.co.uk/pdfs/castrol/castrol-edge-5w-40.pdf
http://www.opieoils.co.uk/pdfs/castrol/EDGE Range/EDGE Turbo Diesel 5W-40.pdf
 
Last edited:
Shadeyman said:
I used Castrol Magnatec(got it cheap) in our old Stilo and never had a problem in 4 years. Plan to use it in our Multiwagon next service(after xmas) and less someone can give me a good reason not to?
http://magnatec.castrol.com/en

Edit Castrol recomend I use Castrol Edge Turbo Diesel 5W-40, anyone else using it?
Click to expand...

Magnotec is a group 3 mineral oil thats been upgraded and called synthetic..years ago mobil took them to court and proved that fact and still the buggers put synthetically engineered on the bottle..I wouldn't put that stuff in my neighbours car..:devil: Halfords own brand fully synth comes from comma and is a poly alfa olefin oil not some bloomin upgraded crap then called synthetic..I go on the opie site and have a good talk to guy now and again who works for them and the chap is a hive of info..well he should be I suppose after 40 years in the business
 
Last edited:
PNL said:
Magnotec is a group 3 mineral oil thats been upgraded and called synthetic..years ago mobil took them to court and proved that fact and still the buggers put synthetically engineered on the bottle..I wouldn't put that stuff in my neighbours car..:devil: Halfords own brand fully synth comes from comma and is a poly alfa olefin oil not some bloomin upgraded crap then called synthetic..I go on the opie site and have a good talk to guy now and again who works for them and the chap is a hive of info..well he should be I suppose after 40 years in the business
Click to expand...

Thanks, Castrol Edge it is then.
 
Shadeyman said:
I used Castrol Magnatec(got it cheap) in our old Stilo and never had a problem in 4 years. Plan to use it in our Multiwagon next service(after xmas) and less someone can give me a good reason not to?
http://magnatec.castrol.com/en

Edit Castrol recomend I use Castrol Edge Turbo Diesel 5W-40, anyone else using it?
Click to expand...

I use Castrol Magnatec C3 5W40 but will switch back to Selenia K. No difference no matter what I put in. And these low-saps oils with no ZDDP are crap anyway, so better use what the book says. Put that in a push-rod engine and you'll go no more than 500 miles.
 
neonglow said:
I use Castrol Magnatec C3 5W40 but will switch back to Selenia K. No difference no matter what I put in. And these low-saps oils with no ZDDP are crap anyway, so better use what the book says. Put that in a push-rod engine and you'll go no more than 500 miles.
Click to expand...

Cant say I am a big fan of Castrol oil in general ..and I do agree with what you say..most people though will look for a cheaper alternative due to the price of selenia oils..some are a good alternative while others are very poor..some info here guys if you want to know all about the sticky stuff you bung in that hole at the top of your engines..:)

http://www.penriteoil.com.au/faq.php
 
PNL said:
Cant say I am a big fan of Castrol oil in general ..and I do agree with what you say..most people though will look for a cheaper alternative due to the price of selenia oils..some are a good alternative while others are very poor..some info here guys if you want to know all about the sticky stuff you bung in that hole at the top of your engines..:)

http://www.penriteoil.com.au/faq.php
Click to expand...

The price is not very different, the Castrol Magnatec 5W40, costs 50 euros, for 4 liters, exactly as much as the Selenia K Pure Energy I put before that. If I could just find one of those ZDDP additives they sell in the US and love to put in their muscle cars, i would even use some Bulgarian oil :D
 
This post contains affiliate links which may earn a commission at no additional cost to you.
This post contains affiliate links which may earn a commission at no additional cost to you.
sussexa said:
have been running normal mobil 1 0w-40 for 2 or 3 changes now(bought a few bottles from opie but they didnt do td version)but last bought at halfords as 25% off a while ago so i bought the mobil 1 0w-40 turbo diesel to try.i believe the main difference will be the detergent packs and possibly the ability to suspend the soot better for the td versions.
wont be changed till spring time now though.
quick glance at edge 5w-40 vs 5w-40 td shows a few differences on specs
http://www.opieoils.co.uk/pdfs/castrol/castrol-edge-5w-40.pdf
http://www.opieoils.co.uk/pdfs/castrol/EDGE Range/EDGE Turbo Diesel 5W-40.pdf
Click to expand...
Useful info -as you say the difference seem to be real

Shadeyman said:
Thanks, Castrol Edge it is then.
Click to expand...
Certainly better than Magnetec but why not move to Mobil as above.

Other differences aside, a 0W-40 should outperform a 5W-40
 
Argonought said:
Certainly better than Magnetec but why not move to Mobil as above.

Other differences aside, a 0W-40 should outperform a 5W-40
Click to expand...

To be honest I've always used Castrol on all my cars(and bikes).

My understanding of oil is:
0W relates to the low temperature viscosity, the lower the better for cold starting?
40 relates to the viscosity of the oil at a certain temperature, 100 degrees C I think.

So Castrol 5W-40 and Mobil 5W-40 should perform equally and choice is left to the buyers preference of brand only?

I understand Mobile Turbo Diesel 0W-40 would be better for cold morning starts compared to Castrol Edge Turbo Diesel 5W-40 but is it better in any other way? Could it be worse doing 80mph for a few hours while traveling to see friends? :confused:

"better the devil you know than the devil you don't"

I'm willing to try something else if enough people give it the (y).
 
Last edited:
Shadeyman said:
I understand Mobile Turbo Diesel 0W-40 would be better for cold morning starts compared to Castrol Edge Turbo Diesel 5W-40 but is it better in any other way? Could it be worse doing 80mph for a few hours while traveling to see friends? :confused:

"better the devil you know than the devil you don't"
Click to expand...
Indeed - who can really say for certain :shrug:

Modern thinking seems to be that the '0W' part effectively puts an end to engine wear on cold starts (aside from being able to start within the Arctic circle ;)). Therefore if they're the same price then you might as well choose 0W-40

I learnt this using Castrol Edge 0W-30 Turbo Diesel. Oil consumption is close to zero (I've never needed to add any oil in 5 years) and there is simply no start-up clatter at all. It's also one of those economical oils which is supposed to improve mpg by about 2% but if I'm honest I can't say I've noticed any difference. It has a bit of a cult following and I'd use it again if Castrol hadn't rather bizarrely discontinued it (see post #1)
 
I wrote to Castrol Technical Department, here is there reply.

The key thing when choosing an engine oil for your vehicle is to confirm that it meets the appropriate specifications. Many specification systems have different categories for petrol and diesel vehicles. For example the American Petroleum Institute (API) system uses S for petrol engines and C for diesel engines (e.g. API SL/CF – the second letters in each case indicating performance level, the higher the letter, the better the performance). The Association of European Automobile Constructors (ACEA) uses A for petrol and B for diesel (e.g.A3/B4 – in simplistic terms, the higher the number, the better the performance, but it is not quite so simple as that as A1/B1 and A5/B5 oils have different characteristics). Volkswagen also have different specifications for petrol and diesel engines (e.g. VW 504 00 = petrol, VW 507 00 = diesel). Ford on the other hand, have one specification (currently WSS M2C-913-C) that covers both.

You can see that oils can be developed to meet either the petrol or the diesel performance specifications. A diesel focussed oil would obviously be developed to meet the diesel specifications as a priority.

That said a lot of oils manage to meet both the petrol and the diesel specifications and will show both types on the pack labels. The reality is that a good petrol engine oil will almost certainly also be very capable in a diesel engine and vice versa, hence most engine oils are sold for use in both.

When you see a dedicated Turbo Diesel oil such as Edge Turbo Diesel 5W-40 on the shelves of your retailer, it indicates that it may have more diesel specifications than petrol and it is called Turbo Diesel so buyers with diesel vehicles will be alerted to the fact that it is likely to be a suitable product for their vehicle.

The particular characteristics of a diesel engine that affect the design of the oil are the propensity to generate soot particles that find their way into the engine oil, the fact that diesel fuel is less volatile than petrol and therefore tends to degrade the engine oil more than petrol and the higher loads that can be experienced in diesel engines.

In summary, the key thing is that you purchase an oil that meets the relevant lubricant specifications for your vehicle; as long as this is the case it doesn’t matter what the product is called. However it is possible that, depending on the make of your vehicle and the brand of oil you purchase, you may find the relevant specification only appears on a product with diesel in the name.

As long as an appropriate specification is shown on the pack you can be confident that the oil will do the job you need it to do. The only thing to consider beyond this is to ensure that whatever brand of oil you purchase is trustworthy and has a reputation for high performance, such as Castrol.

Regards.

Brian Utton
Automotive Technical Manager
Lubricants UK & Ireland

Technical Helpdesk: UK 0845 082 1719
ROI 1 800 509 353
Switchboard: +44 (0)1793 512712

www.castrol.com/ukwww.castrol.com/ie
 
Well done - although not sure I'm any wiser now :)

"in simplistic terms, the higher the number, the better the performance, but it is not quite so simple as that as A1/B1 and A5/B5 oils have different characteristics"

This is interesting as this is the spec. of Mobil's new 0W-30 super fuel economy oil which is supposedly OK for both diesel/petrol

Decided this was too risky so I've ended up with Mobil 0W-40 TD which goes in the motor on Monday (y)
 
Argonought said:
although not sure I'm any wiser now :)
Click to expand...

I have to admit I to feel "none the wiser". Statements like:

Shadeyman said:
When you see a dedicated Turbo Diesel oil such as Edge Turbo Diesel 5W-40 on the shelves of your retailer, it indicates that it may have more diesel specifications than petrol and it is called Turbo Diesel so buyers with diesel vehicles will be alerted to the fact that it is likely to be a suitable product for their vehicle.
Click to expand...

"DEDICATED" "MAY HAVE" "LIKELY" you expect Brian Utton, Automotive Technical Manager, Lubricants UK & Ireland. Castrol. to know if it did or didn't. How the hell are we supposed to tell the difference if he can't? :(

I suspect a standard multipurpose oil in a premium container with a premium price. Do you think this could be true of all manufacturers?
 
Last edited:
You must log in or register to reply here.

Similar threads

N
General Fiat Stillo Diesel
Replies
2
Views
314
notveryclevertrevor
N
2
Technical Turbo project
Replies
1
Views
507
bugsymike
B
Muppet1
Technical Sills have gone on my Multiwagon.
Replies
5
Views
492
jonti
jonti
TG1964
  • Question
Technical Oil pump position?
Replies
6
Views
363
TG1964
TG1964
Fewas123
Technical 1.9 JTD oil pan / sump removing
Replies
3
Views
251
Ralf S.
Ralf S.
Back
Top