Oil change intervals

Submitted: Wednesday, Aug 21, 2013 at 11:48
ThreadID: 103978 Views:2385 Replies:6 FollowUps:9
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Just flicking through a service book at a car yard and noticed that they recommend to drop the engine oil at 5000 km intervals on the navara 2.5 diesel (2012 model ) . Is that the norm? I thought with modern oils 10 000 would be ok? Would it be a warranty issue?
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Reply By: pop2jocem - Wednesday, Aug 21, 2013 at 12:03

Wednesday, Aug 21, 2013 at 12:03
Cliff,

I think you will find with most if not all vehicle manufacturers the recommended oil change intervals are a guide for "average" or normal usage. Extreme usage such as towing, operating in very high or low ambient temperatures and the like will have a reduced interval.
I would think that depending on the type of failure which may or not be covered by warranty could be effected if their recommendations are not followed with regard to oil type/grade and change intervals.

To me oil and filters are cheap insurance compared to engine re-builds.

Cheers
Pop
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Follow Up By: cliff p - Wednesday, Aug 21, 2013 at 12:17

Wednesday, Aug 21, 2013 at 12:17
Thanks Pop, i will talk to the dealer about the warranty side of things. You are right in saying that it is cheap insurance, cars are so expensive these days, it pays to do the right thing. 5000kms it is.
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Reply By: The Bantam - Wednesday, Aug 21, 2013 at 12:12

Wednesday, Aug 21, 2013 at 12:12
There has been some discussion on this of late.
In the past the dirty little diesels of the past realy did need to be changed every 5000Km, because of the soot loading and the piss poor oil filtration.

many people did push the change interval out to 10 000 though with little or no consequeince particular when the engine was young

One would have expected the intervals to lengthen with much cleaner modern common rail diesels...but they have not....maybee the dealers just want your money.

As far as the oils, the modern diesel spec oils like caltex dello, shell rimular and mobil devlac and all long drain interval oils and are routienly run at intervals of 50 000 in heavy highway trucks.....but those are fairly clean running engines with Damn good oil filtration.

cheers
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Follow Up By: cliff p - Wednesday, Aug 21, 2013 at 12:25

Wednesday, Aug 21, 2013 at 12:25
Thanks Bantam for the insight, it all makes sense. I suppose if you cant afford to drop the oil at 5000 kms , you cant afford the car.
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Follow Up By: pop2jocem - Wednesday, Aug 21, 2013 at 13:27

Wednesday, Aug 21, 2013 at 13:27
If you want to push it to the limit you could take a small oil sample after 5000 k's and have it analysed. You would them be sure that you could push the oil change intervals out a bit to suit your circumstances.
With a small capacity sump such as the engine you have mentioned I would just follow the manufacturers recommendations. With large engines that may hold well upwards of 20 liters and clock up more distance and operation hours in a week than you and I would clock up in a month having the oil sampled and determining a suitable change point makes good economic sense.
Many large engines have fine micron bypass filters, centrifugal and magnetic particle separation in addition to the very large capacity full flow filters. There's a fair bit of difference in the sophistication between the average 4WD engine and those found in large trucks, earthmoving equipment, work boats and the like.

Cheers
Pop
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Reply By: Member - Leanne W (NSW) - Wednesday, Aug 21, 2013 at 15:56

Wednesday, Aug 21, 2013 at 15:56
I have a 2008 Pajero common rail diesel and its service interval (oil change) is every 15,000kms.
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Follow Up By: cliff p - Wednesday, Aug 21, 2013 at 16:14

Wednesday, Aug 21, 2013 at 16:14
Thanks Leanne, it leaves ya scratching ya head at times. Different cars different kms. I wonder what you could really get away with in the real world. I will just play the game and play safe.
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Reply By: mikehzz - Wednesday, Aug 21, 2013 at 19:02

Wednesday, Aug 21, 2013 at 19:02
I've got a Jeep with the Mercedes diesel in it and the book says 15k but you can feel the car asking for an oil change at around 10k. Back in the old days, my Dad's company car, a Kingswood, would have a grease and oil change every month.
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Follow Up By: cliff p - Thursday, Aug 22, 2013 at 01:13

Thursday, Aug 22, 2013 at 01:13
I remember the local taxis used to do monthly services as well years ago and boast about the big miles they got out of them because of it. thanks Mike
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Reply By: 410 - Wednesday, Aug 21, 2013 at 19:23

Wednesday, Aug 21, 2013 at 19:23
Hi Cliff
As said depends on time not kms. I too had a Pajero and service was done every 10-15000kms and I sold it at 140,000 kms no probs and now have a 200 services every 10,000 as we are travelling and done 30,000kms in 12mths being when I start the engine I don't switch it off for 4-5hrs. Long trips are better rather than short, thus the trucks running big kms between services.
Whilst I don't agree with this story i remember an old guy telling me one day he decided to trade in the old Holden which had done a fair few kms and after the deal was done the salesman said, "oh Jack i noticed the service book has never been stamped" "yep " said Jack "that's because she's never had a service" . The salesman said "bloody hell, never had a service" Jack said "well would it of made any difference to your trade in price" Salesman response "No"
Richard
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Follow Up By: SDG - Wednesday, Aug 21, 2013 at 21:59

Wednesday, Aug 21, 2013 at 21:59
My first car back as a teenager was an LH Torana. Not knowing any better, and lack of money back then, the poor car never had a change of oil, filters of any description, etc, for the time I had it. 50 odd thousand km. Poor car. I know better now.
Wish I still had it though.
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Reply By: Nomadic Navara - Wednesday, Aug 21, 2013 at 23:01

Wednesday, Aug 21, 2013 at 23:01
The service record for my 2007 D40 has pages for 5,000 km service intervals. It's not a new thing at all. With all 15 services I had done with Nissan agents they ignored the 5,000 km services and all the next service stickers on the window and the odometer resets were set for 10,000 km intervals.

The book provisions for 5,000 km service intervals is just for when you are operating in very severe conditions. Don't concern yourself with them.
PeterD
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Follow Up By: cliff p - Thursday, Aug 22, 2013 at 01:07

Thursday, Aug 22, 2013 at 01:07
Thanks Peter that explains it more clearly. I was going to approach the dealer about the car tomorrow and ask about the services at the same time. Im sure you have answered it for me. Can i ask what sort of run you have had with your D40? Im pretty sure im going to buy this car but one last opinion wouldnt hurt. thanks again
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Follow Up By: Nomadic Navara - Thursday, Aug 22, 2013 at 08:13

Thursday, Aug 22, 2013 at 08:13
I have had what may be considered a poor run with it. Both front wheel bearings have been replaced and a diff whine have been attended to but there has been no problems getting them done under warranty.
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Follow Up By: Member - bbuzz (NSW) - Thursday, Aug 22, 2013 at 16:09

Thursday, Aug 22, 2013 at 16:09
2008 Ford Focus has 15,000 km recommended.

I do mine every half way ie 7,000 the first part and then 8,000.

The 2008 Prado has 7 litres of oil in it but I do it every 5,000 even if only driving around town.

bill
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