viscosity

Hello people, just a quick question, I have a c220cdi on 06 plate with 127k on the clock, is it preferred to use 5w40!rather than 5w30 on an engine with higher miles? Due to the oil being slightly higher viscosity, I was given this advice for my wife's Nissan xtrail. Thanks

I've got a service booked for my 2011 W204 C200 CDI blue efficency and I've got a shelf full of Castrol Edge 5/30w Merc spec at home so I was wondering if the dealer would use that rather than 0/40w that the handbook leans towards. 6.5 litres in my car so if they play ball I'll be saving about...

In a relatively high mileage car(200 000km ), what is the best oil viscosity to use in my 93 E320 . I do tow a lot and also get caught up in traffic from time to time. I currently use a 15W 40 (Castrol GTX2), but am worried that this might not be the ideal. I do change oil every 10000km. Car...

Hi, I am planning to do engine oil change next weekend, the first one on my E CLASS 320 CDI V6 7G ( W211) MB. recomands 229.51 and different viscosity according to related outside temp. So I went to a couple of oil website to locate the correct type of oil they both recommand 5w-30w for the...

I'm using Mobile 1 0w40 on my c43. I found Mobile 1 oil 5w50 to be cheaper in price. It's a bit thicker than the 0w40 oil, is it recommended to use 5w50 on my c43? I have only used fully synthetic motor oil on my car, so I c an save a few quids if I buy the 5w50 oil. Is it good or bad...

Castrol recomends Edge 0W-30 or Magnatec 10W-40 for the rally car... problem is, I need to decide which.... gven that it's going through the scorching Desert, 10W-40 (or thicker) may be better... right? Or have I got this totally wrong? M.

Hi Just getting my car ready for a 1000 mile round trip to France and I have two options for what oil to take. I have two 4l containers fairly full from previous cars, but neither are the recommended 5w-40. I have: Castrol Edge Sport 0w-40 (which cost a fortune) or Shell Helix Plus...

Another "What Oil" question from a new owner! What viscosity would people reccomend for a 100K 1998 C240> From what I have read so far a 0w-40 is not reccomended at these miles (although that seems to be more because of possible seal leakage than protection isssues). So what do people...

Greetings! I'm popping by Costco this afternoon, and just realised I can't remember what viscosity I need in a W202, 1.8lt petrol engine. I seem to remember 0W/40 on Mobil 1 - but can someone confirm this? Thanks in advance, you'll save me a trip home to look at the paperwork! Michele

Hi guys. I am a newby with a recently purchased 1995 E200 with 128k miles on the clock. The last owner had an oil change using BP Visco 7000 (0W-40) about 4k ago. I see recommendations for various oils in this forum from 0 to 10 - 40 and full or part synth. As BP (www.BP.com) recommend this...

Why do oils lose viscosity with use? Viscosity Index Improvers. An oils viscosity will decrease as the engine temperature rises. Viscosity Index Improvers are added to reduce this thinning. They are a key addative in the production of multigrade oils. VI Improvers are heat sensitive...