LL oils + 18k change intervals = waste of time

[-Ad-]

And then blackhawk has to come in and drop the Audi bomb, this thread just gets better and better

I'm quite happy with the 20k ish recommendation for my M135i.

Hand it back at the end of the lease on the verge of the engine self imploding into a blackhole and it will have cost me 0 in servicing.

The Honda on the other hand needs servicing every 15 miles with 'super synthetic ester ethylamine pro-torque JDM Spoon' oil, because internet forum people said they do.

 

[Django x2]

Once, when I bought a brand new car with 1 delivery mile on the clock, I changed the oil while the dealer removed the ribbon and bow from the car, because I wanted to make the engine sound smooth.

 

[Simon]

What is your opinion on the sludge problems with the VAG 1.8T and 2L TFSi, do you know what causes it ? as everyone that owns one is guessing really but more frequent oil changes seems to cause less sludge build up.

Hard to say really, so many factors can be unknown with driving such as:
Idle times, fuel type used, aftermarket boosters, mix of fuels, ethanol content, driving style, fuel dilution, engine wear, coolant leaks etc. Glycol can be a catalyst for sludge formation

The Audi 1.8T is a known engine for sludge due to its range temperatures within it - it has quite a cold cylinder head which can cause condensation. Sludge can form in certain parts of the engine, solidify and break off, this eventually blocks the strainers.

Sludge is basically a mix of water, oil and fuel. If you can run the engine hot you can get the fuel and water out but then running it hot increases oxidation.

The OEMs do lots of testing to understand this and set the ODIs accordingly, hoewver we see all sorts of issues out in the field - one example being the guy who topped up his engine with oil from his garage. He didnt realise his wife had put old cooking oil in the bottole though - im sure you can imagine the results.


For the 1.8T though I would go for a 5W-40 A3/B4 502 505 oil, these are around 10 TBN, giving plenty of 'base' to neutralise acids.

The 2.0 TFSi will require a 5W-30 504 / 507 oil due to the Fsi system. These are designed for Diesels with DPFs too so have a TBN of around 6-6.5.

 

[Scania]

Scania trucks have an oil change interval of 120,000km - 46k miles, the 11plate example I'm driving this week isn't using any oil from what I've seen by doing my daily checks yet has 380,00miles on the clock.

It has a rather large turbo charger too!

 

[bainbridge]

I change mine twice per year and do about 16k per year.

Once in the spring when it starts getting warm, around late April-ish and again in autumn just before it starts getting really cold (doing it next week).

I expect she would still run well only being changed once per year, but she's been given this treatment since I stopped getting her stamped at the Ford garage and it's only about £35 including filter per change so I just do it anyway.

Plus it allows me to use my oil filter chain remover thingy and get the jack out

 

[Orionaut]

Scania trucks have an oil change interval of 120,000km - 46k miles, the 11plate example I'm driving this week isn't using any oil from what I've seen by doing my daily checks yet has 380,00miles on the clock.

It has a rather large turbo charger too!

A quick google suggests that a big Scania engine might well have a sump capacity of 45 Litres (10 Gallons!!)

They also has a specific performance (Albeit on a high torque/low RPM strategy) of around 40 BHP/Litre (About half that of the latest small capacity TDIs)

I also gather that big trucks also have multi stage (High efficiency by-pass) oil filtration.

I dare say, if I fitted an enlarged (12L) sump and a Franz type oil filter to my old LC80 (4.2TD)! 50,000 mile oil changes would be just fine too!

The anecdote, while interesting, is not really that relevant to the argument!

(Edit! Thought there was something wrong with the original post. Are we talking about 120,000Km or 48,000 Miles? they are not the same thing you know! )

 

[Blackhawk47]

Scania trucks....

 

[Scania]

A quick google suggests that a big Scania engine might well have a sump capacity of 45 Litres (10 Gallons!!)

They also has a specific performance (Albeit on a high torque/low RPM strategy) of around 40 BHP/Litre (About half that of the latest small capacity TDIs)

I also gather that big trucks also have multi stage (High efficiency by-pass) oil filtration.

I dare say, if I fitted an enlarged (12L) sump and a Franz type oil filter to my old LC80 (4.2TD)! 50,000 mile oil changes would be just fine too!

The anecdote, while interesting, is not really that relevant to the argument!

(Edit! Thought there was something wrong with the original post. Are we talking about 120,000Km or 48,000 Miles? they are not the same thing you know! )

Right, now I've managed to put out the flames I was shot down in, I apologise for my inability to use the conversion app on my phone!