what oil? - primera cd20t

ashagplz · 21 Nov 2011 at 16:25

wondering whats the kindest thing i can do for my 11 year old primera turbo diesel with 100,000 on the clock.
So i know i can buy fancy pants fully synthetic oil at 0-50 but i have often heard older engines are better off with 15-40. So that leaves me with semi synthetic Mobil Super 2000 as number one option. So can some mechanic or high end diy'er tell me if this is the best i can do for her? or go for something better?
:confused:

loltim · 21 Nov 2011 at 16:27

It's an 11 year old primera - use carlube, or the cheapest stuff you can find.

NathWraith · 21 Nov 2011 at 16:32

Have corrected your title now.

kae2 · 21 Nov 2011 at 16:34

NathWraith said:
Have corrected your title now.

I don't know about the OP, but I for one would like to thank you for this act of kindness!

NathWraith · 21 Nov 2011 at 16:35

kae2 said:
I don't know about the OP, but I for one would like to thank you for this act of kindness!

Matt82 · 21 Nov 2011 at 16:49

just stick with the grade Nissan says unless you have a good reason to do otherwise?

ashagplz · 21 Nov 2011 at 16:56

why use the cheapest? im looking after this car to get the best out of it i can. That does not mean cheapest. Cheapest means less mpg and increased wear on the engine. Better oils have better additives that help with other aspects of the engine. So the question really is, if anyone knows, for an older engine what is the best i can use in this engine?

OpenToSuggestions · 21 Nov 2011 at 17:01

ashagplz said:
why use the cheapest? im looking after this car to get the best out of it i can. That does not mean cheapest. Cheapest means less mpg and increased wear on the engine. Better oils have better additives that help with other aspects of the engine. So the question really is, if anyone knows, for an older engine what is the best i can use in this engine?

Whilst what you say is probably correct, I would say that the likes of Castrol and Mobil are pretty much the same as the cheaper stuff, but in a fancy container with a significant price increase.

My advice would be feel free to buy cheaper oil, just make sure you add the correct quantity, type and at the correct service intervals, always with a new oil filter.

The Haynes for my Micra says use 15-40 but I have always used 10-40. The bloke at the car parts place (A-Z spared in Stoke) seemed to know what he was on about and said no cars really use 15-40, just stick 10-40 in. Never had any issues.

loltim · 21 Nov 2011 at 17:30

ashagplz said:
why use the cheapest? im looking after this car to get the best out of it i can. That does not mean cheapest. Cheapest means less mpg and increased wear on the engine. Better oils have better additives that help with other aspects of the engine. So the question really is, if anyone knows, for an older engine what is the best i can use in this engine?

because you're in danger of spending more on an oil change than the car's value

Matt82 · 21 Nov 2011 at 18:52

Ive done that with looking after my old golf. It looked after me till 234k miles so far, so it depends on what you want from the car I suppose

Fuzz · 21 Nov 2011 at 19:26

it's eleven years old and has done over one hundred thousand miles.
Now is not the time to be worrying what oil it should have in it.
Just make sure it has "some" oil in it and you're good to go.

Look up the specs of oil it should meet and follow them

Simon · 25 Nov 2011 at 17:08

mglover070588 said:
Whilst what you say is probably correct, I would say that the likes of Castrol and Mobil are pretty much the same as the cheaper stuff, but in a fancy container with a significant price increase.

You would be wrong then.

ashagplz · 28 Dec 2011 at 14:45

the reason for lower spec oil for older engines is that they will have more wear and tear, in other words the contact points are not as smooth as a new engine and thus a thin (higher spec) oil is providing less protection at the points of wear and tear.