engine oil

[Clan]

Originally Posted by royalburger

hi can anyone tell me what's the best oil I can give to my v40 1.8 sport lux pdi ( with the gdi engine ) ?

volvo recommend 5w/30 , OR 0w/30 for best protection ,
I would use the 0w/30 especialy in this GDI engine which can tend to coke up .. go for 0w/30 ...

[Slackey]

Doggie...

[liberate]

i like brand "A"oil and i like brand "B"oil

but what is best?

only one way to find out



FIGHT!

[skyship007]

Originally Posted by Clan

volvo recommend 5w/30 , OR 0w/30 for best protection ,
I would use the 0w/30 especialy in this GDI engine which can tend to coke up .. go for 0w/30 ...

The Castrol Edge 0/30 is right at the top of the 30 grade range, in fact its only about 5% below Mobil 0/40 in 100c kinematic viscosity terms. Many of the cheaper 5/40 part synthetics shear down faster than the Castrol product, so can finish up thinner after use. The Americans call it German Castrol, because it was designed for long oil change intervals.
There are some real bad 5/30's for sale in the EU and they finish up down in the 20 range well before the recommended max OCI is achieved.

I don't understand why anyone would think oil can prevent Carbon deposits in cylinders, it's an advertising myth. Regular WOT on a Sunday motorway session combined with some top of the range fuel additives can help prevent it. Anti Carbon spray in cleaners and even overnight piston soaks when you change plugs also help.

If I got stuck owning a Coker, I would use Edge 0/30 (It's as good as most 5/40's in average viscosity terms) and figure out which fuel additive to use, combined with a piston soak if the cars was used in a city and subject too much idle.
Mobil M1 oils tend to have higher detergent contents, so they might be a fraction better at preventing oil related deposits. M1 0/40 (It's almost into the top of the 30 range) has 3500 ppm of Calcium based detergents and is a good cleaner of blowby related Carbon deposits, BUT often causes slightly increased wear in comparison with Edge 0/30.
It's a complicated subject, but it does help extend the life of the main block if you get the answers correct. Castrol and Mobil both know far more about which modern oil is best for most engines, as Volvo are a car company who use main blocks from other manufacturers. The Volvo dealers in the UK seem to be using a cheaper oil listed in the alternate sections, so I would not use the full 10K mile OCI if you don't check actual results.

[Slackey]

Originally Posted by skyship007

the castrol edge 0/30 is right at the top of the 30 grade range, in fact its only about 5% below mobil 0/40 in 100c kinematic viscosity terms. Many of the cheaper 5/40 part synthetics shear down faster than the castrol product, so can finish up thinner after use. The americans call it german castrol, because it was designed for long oil change intervals.
There are some real bad 5/30's for sale in the eu and they finish up down in the 20 range well before the recommended max oci is achieved.

I don't understand why anyone would think oil can prevent carbon deposits in cylinders, it's an advertising myth. Regular wot on a sunday motorway session combined with some top of the range fuel additives can help prevent it. Anti carbon spray in cleaners and even overnight piston soaks when you change plugs also help.

If i got stuck owning a coker, i would use edge 0/30 (it's as good as most 5/40's in average viscosity terms) and figure out which fuel additive to use, combined with a piston soak if the cars was used in a city and subject too much idle.
Mobil m1 oils tend to have higher detergent contents, so they might be a fraction better at preventing oil related deposits. M1 0/40 (it's almost into the top of the 30 range) has 3500 ppm of calcium based detergents and is a good cleaner of blowby related carbon deposits, but often causes slightly increased wear in comparison with edge 0/30.
It's a complicated subject, but it does help extend the life of the main block if you get the answers correct. Castrol and mobil both know far more about which modern oil is best for most engines, as volvo are a car company who use main blocks from other manufacturers. The volvo dealers in the uk seem to be using a cheaper oil listed in the alternate sections, so i would not use the full 10k mile oci if you don't check actual results.

bah, blah......and more blah!

[mcouchard]

Moderators:
Can we just put Volvo's recommended oil spec list in the sticky for future reference. Then PLEASE effectively ban/delete any future threads on engine oil, is that possible?

[skyship007]

For GDI owners this is the Castrol oil finder result:

BEST OIL:
EDGE 5W-40
S40, V40 1.8i GDi
1997 - 1999
3.8
Magnatec 10W-40 A3/B4
That result is exactly the same as the German Volvo dealers.

My opinion: Mobil M1 0/40 for summer, M1 or Castrol 0/30 in winter. PEA containing fuel additive and piston soaks.
The piston soak is done before the oil change, NOT after it! Can be a big mistake if the rings are bad, as it contaminates the oil.
If this engine has valve seat and stem Carbon issues, then a spray in cleaner can help, but if you don't get some nice steady Sunday WOT every month minumum there might still be trouble in the long term.

To cover the out of date Volvo guide, this is a copy from FRF:

MODEL: S40, V40, S60, V70 (any), XC90, C70, S80 (inc 1999>)
YEAR: 2000 to 2004(S80 = 1999>)
ENGINE: All Petrol and Diesel Engines.
SERVICE INTERVAL: All
OPTIMUM Protection (2) Castrol SLX Professional Longtec 0w-30[ACEA A3/B3/B4]
STANDARD Protection (3) Castrol SLX Professional 5w-30 [ACEA A5/B5]

MODEL: S40, V40, V70, C70, S90, V90, 200, 300, 400, 700, 800, 900
YEAR: Up to > 1999
ENGINE: All Petrol and Diesel Engines.
SERVICE INTERVAL: All
OPTIMUM Protection (5) Castrol Magnatec Professional 10w-40[ACEA A3]
STANDARD Protection (6) Castrol GTX Professional 10w-40 [ACEA A3/B3]

Castrol have changed their product range recently, Volvo are stuck with their previous oil contract, which is different in different countries. The Castrol oil finder guide provides far more up to date info and is what the German Volvo dealers have to follow, it is engine type specific:
http://www.castrol.com/castrol/secti...tentId=7073092

PS. The Mobil and Liqui Moly oil guides are better sources of engine specific info, than the "One size fits all" Volvo dealers contract.
To be honest, the V40 has been out of production for 10 years and none of them are under warranty, so why think there is anyone in Volvo doing R&D with new oils on old engines. The Chinese are not interested in how long an old Volvo engine lasts, but oddly enough Castrol are, as are Liqui Moly, Mobil and Shell.

[skyship007]

My favourite oil lab:
http://www.blackstone-labs.com/

That site has a mine of information about engine oil and the information section can help you learn how to figure out the real best oil, filter and change interval. It's also fun to read.
Oddly enough the actual oil type does not matter much, as long as it's a good quality one, the filter often makes more difference, but the real fun is figuring out the best change interval AND responding to warnings about coolant, fuel or dust contamination.

[Slackey]

Skyship, you really are a boring individual. I pity anyone that has to endure you on a one to one basis. You are a Troll of the highest order and now going on my ignore list.

If others have any sense they too will add you to their ignore list and no longer have to suffer your inane drivel

[Slackey]

Ahhhh... Now that's better, Skyship ignored and all the drivel is gone!