4.8 Engine oil

Engines and Engine Systems
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Pieter B
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4.8 Engine oil

Post by Pieter B » 24 Dec 2017 11:31

I bought a 4.8 a few weeks ago and thought it would be a good idea to give it a service. This would be more to give myself a baseline to work from. I read the handbook and looked at posts on the forum and the 4.8 needs a 5W30 engine oil. I had a big surprise when I saw the price. My question is: if the earlier 4.8's were able to use a 5W40 oil, what changed in the later models. The ausie forms suggest using the 5W40 on higher milage engines. Has anybody used 5W40?

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Re: 4.8 Engine oil

Post by Clem » 25 Dec 2017 08:49

Pieter, use a 15w40. Graham uses AGIP 15W40 in the 4.8. He says that the heavier oil is better for them. IIRC it prevents premature shim wear. At first I wondered about (questioned) this but some research indicates that Graham is absolutely correct. You willl also see that in your owners manual 15w40 is one of the specified options and covers the entire expected temperature range in South Africa. At my next service I may switch to a Mobil 15w50 fully syn.

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Re: 4.8 Engine oil

Post by Kagiso II » 25 Dec 2017 13:06

If still under guarantee -- stick with the manufacturer's specs
If Out of warranty, go with what Graham says.
Over 300,000 km switch to a GOOD Diesel oil [Delo 400; Rumula; Mobil's Liqi gold or Engen's Diesel Oil ] - BUT then service more regularly
Don't bring God down to your level of faith ... bring your faith up to His level!

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Kagiso II
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Current 4x4: 1982 Datsun Safari 2,8 aka LOBO; [1,300,000 Km verby !]
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Re: 4.8 Engine oil

Post by Kagiso II » 25 Dec 2017 13:06

If still under guarantee -- stick with the manufacturer's specs
If Out of warranty, go with what Graham says.
Over 300,000 km switch to a GOOD Diesel oil [Delo 400; Rumula; Mobil's Liqi gold or Engen's Diesel Oil ] - BUT then service more regularly
Don't bring God down to your level of faith ... bring your faith up to His level!

Clem
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Full Name: Clem Daniel
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Re: 4.8 Engine oil

Post by Clem » 25 Dec 2017 13:24

Kagiso, 15W40 is manufacturer's spec. If you look at the 4.8 lubrication specifications, you will see a whole range of different options listed, one of which is 15W40. In fact it appears that the Nissan agent's in South Africa are also using 15W40 for the 4.8.

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Pieter B
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Re: 4.8 Engine oil

Post by Pieter B » 25 Dec 2017 20:26

I agree. If Graham is servicing the 4.8's with 15W40, then I'll do the same. Thanks everyone, hopefully I'll a spareshop open tomorrow.

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