C30 Engine : Is C30 D2 engine same as D2 in 2012>V40 ?

[FunkyMelon]

I have been advised before by a very well known Volvo mechanic that 5W30 is far too thin for these T5 engines and can over time cause the bottom ends to fail.

He apparently rebuilt 13 bottom ends on ST's last year using 30 weight oil.

Advised to change to 10W40 as soon as possible so that's personally what I run in mine.

[LizardOfBodom]

Originally Posted by FunkyMelon

I have been advised before by a very well known Volvo mechanic that 5W30 is far too thin for these T5 engines and can over time cause the bottom ends to fail.

He apparently rebuilt 13 bottom ends on ST's last year using 30 weight oil.

Advised to change to 10W40 as soon as possible so that's personally what I run in mine.

Whoa whoa, hold on, elaborate please? First time I hear such opinion to NOT use recommended oil for those engines. How is 10/40 better for our turbo etc?

[scoobysn7x]

Originally Posted by EdMan

Hmm, is there a way how we can trace the engines down by their manufacturing codes or Volvo models? I know that many people know engines by their codes, but I don't know where to find such info.

That is a valid point and makes perfect sense to go for Volvo engines over Peugeot, however, with the mileage that I do , I would get more savings out of D2. In my honest opinion, D3 is a great engine, but if D3 can only do 55mpg, then it is not worth getting it with savings in mind, and just go for 2.0l petrol engine which would do 42-45mpg on my commute. And, it being simpler engine, should require less repairs in future. Oh, and when I had V40 D2, I was getting 65mpg (62mpg real) on my daily commute. That being said, it was painfully slow and danger to the life when you need to overtake on A roads.

We have a V60 D4 and a V60 D2 and honestly don't see any real difference in economy and both £30 a year to tax, if anything get better mpg form the D4 on a run but then I don't hyper mile so the D2 if higher RPM at the same speed as the D4.

Like any diesels if you do the mileage, or at least a few long runs a month you probably won't have issues, the earlier 1.6D had issue but I think the D2 is more problem free

[FunkyMelon]

Originally Posted by LizardOfBodom

Whoa whoa, hold on, elaborate please? First time I hear such opinion to NOT use recommended oil for those engines. How is 10/40 better for our turbo etc?

Have a good read.

http://forums.t5d5.org/topic/33713-o...comment-305270

Having dealt with both Tim and Volvo numerous times I know who I'd rather listen to and it's certainly not Volvo.

EDIT: Sorry OP - I posted comment 11 in the wrong thread, this was meant to be in the T5 one, sorry!

[Tannaton]

Originally Posted by FunkyMelon

Have a good read.

http://forums.t5d5.org/topic/33713-o...comment-305270

Having dealt with both Tim and Volvo numerous times I know who I'd rather listen to and it's certainly not Volvo.

EDIT: Sorry OP - I posted comment 11 in the wrong thread, this was meant to be in the T5 one, sorry!

Had a brief read - it's somewhat opinion etc. the oil pressure at tickover isn't really relevant as the forces/wear on an engine are probably less than 100 times that on boost/high rpm.

As we know if you modify a car you have to change other things as well to compliment the new spec (brakes, suspension) I guess its the same with the oil. But in standard spec I wouldn't be too worried. If you go too thick you risk problems with the hydraulic tappets and valve clearances.

[FunkyMelon]

Originally Posted by Tannaton

Had a brief read - it's somewhat opinion etc. the oil pressure at tickover isn't really relevant as the forces/wear on an engine are probably less than 100 times that on boost/high rpm.

As we know if you modify a car you have to change other things as well to compliment the new spec (brakes, suspension) I guess its the same with the oil. But in standard spec I wouldn't be too worried. If you go too thick you risk problems with the hydraulic tappets and valve clearances.

Maybe so, but Tim has been building/rebuilding most Volvo engines since they were launched, so I'd take his word on it. I have read of bottom ends going on ST forums, you don't hear of it on here so much as Volvo T5's don't sell anywhere near as well as Focus ST's/RS's.

It's personal preference though, each to their own and all

[LizardOfBodom]

Ok thanks for clarification. After reading that I agree it looks more like "personal opinion" rather that scientifically proven fact (not saying its wrong though!) but I dont know enough to take my own mind with it so I will just play sheep and stay with 5W30 for now :P

[Rusty1]

Originally Posted by EdMan

That sounds great. May I ask what mpg do you get out of it on your commute? And how expensive was the big service with cambelt being done?

Measured MPG over the last 75k miles has averaged 58 driving carefully and not exceeding 60mph on motorways. On the occasions that I drive normally I get around 52. The cambelt service including water pump, aux belt and new front discs & pads came to £676 inc VAT from an independent.

I think the D2 engine is great, there isn't loads of power but what it has is just where you need it for everyday use. If your foot is constantly buried in the carpet then you'd be better off looking at other engine options.

[EdMan]

Originally Posted by Rusty1

Measured MPG over the last 75k miles has averaged 58 driving carefully and not exceeding 60mph on motorways. On the occasions that I drive normally I get around 52. The cambelt service including water pump, aux belt and new front discs & pads came to £676 inc VAT from an independent.

I think the D2 engine is great, there isn't loads of power but what it has is just where you need it for everyday use. If your foot is constantly buried in the carpet then you'd be better off looking at other engine options.

Thanks Rusty1 for the great insight. These numbers are very reasonable indeed. On my daily commute my foot is reasonably light, so the savings should be good. I have my motorbike when I feel 'adventurous'