Best oil for Nissan Patrol MQ L28

Submitted: Friday, Jun 24, 2005 at 11:19
ThreadID: 24138 Views:5120 Replies:3 FollowUps:4
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Hi Guys, I am interested to know what is the best oil for my Patrol L28 motor. The oil manufacturers recommend very different oils and viscosities, for example Penrite recommends HPR30 20W-60 while Mobil recommends SUPER 4X4 10W-40 which is very light oil indeed. I was using Penzzoil 4WD 15W-40and now have switched to Penrite HPR 30 and am finding the car uses about 10% more fuel and the engine revs less freely.
The Vehicle is done 250000km and the engine works like a clock, I use it mostly around town and occasionally on country trips and almost never do any towing. Oil consumption around town is insignificant and on the highway it uses about 300mil per 500km of PENZZOIL 4WD 15W-40 or about 100mil per 1000km if I use Penrite HPR30.

Q1. I change my oil and filter every 5000km SO is there any benefit in using the heavier oils? Or am I better off to use light oils?

Q2. Is there any specific brand of oil for the L28 Patrol that works best for that motor?

Q3. Is it worth spending double the money for Penrite or is Valvoline 20w-50 just as good?

Any advise will be much appreciated!
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Reply By: 80scruiser - Friday, Jun 24, 2005 at 13:25

Friday, Jun 24, 2005 at 13:25
Gday Rick
The best oil is fully synthetic but I wouldn't use it if I were you. Your vehicle was designed when old 20w50 SF oil was around and will still be ok to use now but there are better products around.
You can try this site and just click on your make and model and it will tell you everything. Most of the bigger brand oils have a site like this.
You must remember that blending oil is like making a cake. It is blended to a recipe so all SF, SH, SJ and SL are the same as each other. Obviously the latest is SL and is the best so what ever grade you use make sure it is SL.
The one specified by Caltex is a 20w50 grade which is fine for yours.

Hope I haven't confused you too much.
AnswerID: 117242

Follow Up By: Rick P - Saturday, Jun 25, 2005 at 01:35

Saturday, Jun 25, 2005 at 01:35
Thanks mate, this is something I didn't know, and yes, I'll be checking the grades with much attention! In your experience, is SL 10W-30 as good as SL 15W-60? For My Patrol L28?

FollowupID: 372805

Follow Up By: 80scruiser - Monday, Jun 27, 2005 at 09:39

Monday, Jun 27, 2005 at 09:39
10w30 is great stuff but is devoloped for later model engines to give quicker lubrication on start up and optimal fuel economy.
I wouldn't use it in your case as it is designed for vehicles produced from roughly 2000 on. If you stick to a 15w40 or 15w50 SL grade oil you can't go wrong.
FollowupID: 372984

Reply By: Exploder - Friday, Jun 24, 2005 at 16:44

Friday, Jun 24, 2005 at 16:44
G'day Rick
Hear are my thoughts

The Mobil recommendation will be a mix between engine protection, performance and fuel economy. I am not saying Mobil is not a good product, as far as oil goes it is one of the best.

The Penrite will be made for use in Australian conditions and will be focused around engine protection. If you are finding the HPR30 to thick you could switch to HPR15, which is 15W60 from memory and will let the engine rev more freely.
AnswerID: 117277

Follow Up By: Rick P - Saturday, Jun 25, 2005 at 01:45

Saturday, Jun 25, 2005 at 01:45
Thanks Exploder, my prime focus is engine life so I am not too concerned with fuel economy or cold starts. But this when it gets interesting, the Pentire website recommends HPR30 as standard, but for extreme conditions, the HPR 40 which I tried... and it is so thick that at 15C the engine can hardly crank! and I have a brand new starter-motor and brand new heavy duty batter!!! I contacted the Penrite Website and they recommended I use HPR 30 for winter and HPR 40 (25W-70) for summer! ... am I confused??? YES

FollowupID: 372806

Follow Up By: Exploder - Saturday, Jun 25, 2005 at 13:10

Saturday, Jun 25, 2005 at 13:10
I am not going to try and confuse you more

But 25W70 is pretty bloody thick and it is more of high mileage oil and for engines that have oil consumption problems, it would also have some form of gasket conditioner in it I would think

I would try HPR15 if you feel HPR30 is robing you of performance

Or just use a 20W50 oil, as 80 Recommended.

FollowupID: 372826

Reply By: Rick P - Monday, Jun 27, 2005 at 22:32

Monday, Jun 27, 2005 at 22:32
Thanks guys, what would you say is a more trusted brand: Castrol or Penrite, the one thing I've noticed with the Penrite recommendations (as per Their Website) is that they tend to recommend heavier oils for most vehicles I checked.

Is there a greater benefit in using a heavier oilin ‘SL’ rating rather than a lighter one?
AnswerID: 117816

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