rollin danny said:

20 ltr triple qx 5w 30 semi synthetic acea b1 api cf £39.00 delivered on ebay.
same oil that euro car parts sell only cheaper.
I bought 20 ltr 10w 40 for my tdi .works out less than £2.00 per litre

Click to expand...

Might try Euro's on Friday cos sometimes they have 'Friday specials' on oil but maybe only if you're in the trade, still worth a call
Kev

thebiglad said:

This question about oils specifically for TD5 engines kicked off for me when Fery mentioned this Comma oil which proclaims to be specifically for EUI engines such as the TD5.

I have asked Comma to explain what characteristic it is in their oil which supports their claim that their oil has some kind of advantage, for this type of engine and I await their reply.

In the table I posted there were significant differences between the 2 sets of data, the first set for Xtec 5w-30 (their recommended oil for our engines) and the 2nd set for for the 'special' Pompe Duse engines (like ours!!!)

The question in my mind is, out of the mountains of data one can collect these days via the 'net; which are the key characteristics for judging one oil over another?

Data is not information in my book.

Click to expand...

Sorry, didnt see the attachment you posted.

Those specs are very similar, the main difference appears to be that the PD oil is actually more of a 5w40 than a 30 with that KV100 figure.

According to RAVE:

Engine oil - Td5
Use oil meeting specification ACEA: A1, B1 or B2.

ACEA diesel engine standards - explanation:

ACEA B1 :
Oils intended for use in diesel car and light commercial vehicles specifically capable of using low friction, low viscosity oils with high temperature / high shear characteristics.

ACEA B2 : Now obsolite

ACEA B3 : For use in high performance diesel cars and light commercials where extended drain intervals are specified by the manufacturer and / or for year round use of low viscocity oils and or for use in severe operating conditions as defined by the vehicle manufacturer.

ACEA B4 : For use in high performance direct injection diesel engines. Also suitable for applications described under B3.

ACEA B5 : For use in high performance car and light commercial diesel engines designed for low viscosity oils where extended oil change intervals are specified by the vehicle manufacturer.

Curiously the Comma PDPlus 5w-40 oil is rated thus:

"Recommended by Comma for applications
requiring:

VW 505 01, FORD WSS M2C917-A; VW 502 00,
VW 505 00; BMW LL-04; MB 229.31
ACEA C3; API SM CF" (C3 being a petrol engine std?????)


Dave

Castrol recommend this for the TD5

http://msdspds.castrol.com/bpglis/F...DA1EFA980257C91004A7D64/$File/BPXE-9GXQB5.pdf

Which incidentally is the Factory fill for the Puma engine as well as the TDV6 and TDV8.

thebiglad said:

According to RAVE:

Engine oil - Td5
Use oil meeting specification ACEA: A1, B1 or B2.

ACEA diesel engine standards - explanation:

ACEA B1 :
Oils intended for use in diesel car and light commercial vehicles specifically capable of using low friction, low viscosity oils with high temperature / high shear characteristics.

ACEA B2 : Now obsolite

ACEA B3 : For use in high performance diesel cars and light commercials where extended drain intervals are specified by the manufacturer and / or for year round use of low viscocity oils and or for use in severe operating conditions as defined by the vehicle manufacturer.

ACEA B4 : For use in high performance direct injection diesel engines. Also suitable for applications described under B3.

ACEA B5 : For use in high performance car and light commercial diesel engines designed for low viscosity oils where extended oil change intervals are specified by the vehicle manufacturer.

Curiously the Comma PDPlus 5w-40 oil is rated thus:

"Recommended by Comma for applications
requiring:

VW 505 01, FORD WSS M2C917-A; VW 502 00,
VW 505 00; BMW LL-04; MB 229.31
ACEA C3; API SM CF" (C3 being a petrol engine std?????)


Dave

Click to expand...

Hey Dave, when it comes to oil IMO RAVE is "obsolete" like the B2 oil , but C3 is not only for petrol:

http://www.driverstechnology.co.uk/oils.htm said:

ACEA

This is the European equivalent of API (US) and is more specific in what the performance of the oil actually is. A = Petrol, B = Diesel and C = Catalyst compatible or low SAPS (Sulphated Ash, Phosphorus and Sulphur).

Unlike API the ACEA specs are split into performance/application catagories as follows:

A1 Fuel economy petrol
A2 Standard performance level (now obsolete)
A3 High performance and/or extended drain
A4 Reserved for future use in certain direct injection engines
A5 Combines A1 fuel economy with A3 performance

B1 Fuel economy diesel
B2 Standard performance level (now obsolete)
B3 High performance and/or extended drain
B4 For direct injection car diesel engines
B5 Combines B1 fuel economy with B3/B4 performance

C1-04 Petrol and Light duty Diesel engines, based on A5/B5-04 low SAPS, two way catalyst compatible.
C2-04 Petrol and light duty Diesel engines, based on A5/B5-04 mid SAPS, two way catalyst compatible.
C3-04 Petrol and light duty Diesel engines, based on A5/B5-04 mid SAPS, two way catalyst compatible, Higher performance levels due to higher HTHS.

Note: SAPS = Sulphated Ash, Phosphorous and Sulphur.

Put simply, A3/B3, A5/B5 and C3 oils are the better quality, stay in grade performance oils.

Click to expand...

whole info here http://www.driverstechnology.co.uk/oils.htm

I recommended the COMMA DPD5L 5W40 Diesel PD oil cos it's cheaper in UK, i'm using now CASTROL EDGE 5W40 which is expensiver

I got 10 litres of the Fuchs Titan as recommended by Fery when Opie were doing a 20% off deal: Fuchs TITAN GT1 5W-40 Synthetic engine oil - BMW, Mercedes, Porsche, VW & more

That's a brilliant oil for Td5

I'd never use a mineral. Dino oils require viscosity improvers to provide the multi-grade (5W-30, etc.). Over time, your additive package wears out, including the VI's, and your oil resembles more of a straight SAE30 than a multigrade.

Synthetics don't have VI's... they don't need them. I'm not saying synth doesn't wear out, I'm just saying that even when worn out - it still resembles a multi-grade.

Most of your engine wear is at startup. The reason why oil filters have bypass features is to allow the oil at the cooler, THICKER grade pass while it is trying to warm up and THIN to engine manufacturer specs. Take a listen to your engine on startup - it sounds rattly at first, then it quietens and smooths out.

Cars can run for a constant million miles or more with whatever you choose to put in them - BUT, for us who start and re-start colds engines every day - we cause engine failure by not using the correct grades & specs and not respecting the process on startup.

A 0W-30, 5W-30, 10W30 oil has the same viscosity at the engine operating temperature design at 212*F. The difference with these grades is that the 0W does not THICKEN as much as the 5W, which in turn does not THICKEN as much as the 10W.

Either way, the difference with a full synthetic 5W-30 is that it doesn't THICKEN as much when cold, than a mineral 5W-30.

That is what will provide better protection at startup. Mineral oils and using incorrect grades on startup can't provide lubrication until they warm up and THIN out.

For my 2001 Td5, I use a 5W-30 synthetic, but for the startup sequence, it would be better if I used a 0W-30.

Either way, both oils provide the correct viscosity at running temperature, whether I'm in Alaska or Africa.

Thanks for asking this. And thanks to all who answered, there is a lot of food for thought here, and I have learned a lot!

Interesting stuff indeed.
Just did an oil change on my classic Mini today and amazing how much thicker good old green 20W50 is compared to the 0W30, 5w30 watery stuff that modern engines like!