GU factory oil only??

Submitted: Wednesday, Jul 09, 2003 at 16:26
ThreadID: 5892 Views:1666 Replies:3 FollowUps:1
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Hello All
I read a post about running temps of the new gu diesel and a comment was made about the use of aftermarket oils and the fact that the low running temps stopped most oils from reaching their optimum temp.
Can anyone offer an opinion or direct me to the original post
Tonyshe said you're
not going
down there with
me in here!
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Reply By: Donald - Wednesday, Jul 09, 2003 at 19:19

Wednesday, Jul 09, 2003 at 19:19
Tony, Helen,
I have not seen the original post but I can give you some info from my experiences in Industry..
It is assumed that the engine has an oil change every 5000K
You would have to define where you would be using the vehicle.
In the snow or in the hot dessert.
The operating conditions and temperature are all about viscosity and modern oils do cover a range but they also do have limits. Regardless of Brand. Refer to Makers Handbook for the ranges. The grades nominated are based on new engines with clearances on spec. The particular oil specified is to provide an adequate oil film between the moving parts at normal operating temperature. The worst case scenarios of operating conditions are assesed for both hotter & colder conditions and a mult-grade oil is applied. Nissan don't make their lube oil, they have an oil company make it for them to a specification which covers what I have mentioned. If you chose an alternative supply you must make sure the viscosity index range will match the same as the OEM oils spec. Too thin an oil (being very hot or too low a viscosity) causes a break down of lubricating oil film and metal to metal contact can take place with sudden load changes. Too heavy an oil (too cold or high viscosity) actually will ceate friction and cause problems in high speed areas such as turbo charger sleeve bearings, hence there has to be an optimum
It is critical on Turbo Engines as Turbo chargers run up to 30,000 RPM and need oil at the right viscosity the rest of the engine can handle a slight variation if the engine is in good nick and the cooling system is up to scratch.
Lube oil provides both a film to prevent metal to metal contact and to take away heat from moving parts.
There are standards the base oils are made to: There are many after-market oils from Refiners which will do the job. Castrol goes to Shell & other Refiners under term contract to make their oils. Other Brands by Refiners. See these websites and contact the respective sales ENGINEERS. Not the man in the corner store or Supermarket or Spare Parts Shops or Uncle Joe.
"Protect Your Investment"
see each website
BP not much on the web
AnswerID: 24567

Follow Up By: kezza - Wednesday, Jul 09, 2003 at 22:16

Wednesday, Jul 09, 2003 at 22:16
dont ignore Penrite oils

FollowupID: 16527

Reply By: Martyn (WA) - Wednesday, Jul 09, 2003 at 23:01

Wednesday, Jul 09, 2003 at 23:01
Did your mate get sorted with the thermostat housing? Keep the shiny side up
AnswerID: 24579

Reply By: Steve from Drive Systems Victoria - Thursday, Jul 10, 2003 at 14:45

Thursday, Jul 10, 2003 at 14:45
Which engine are you referring too? 3 litre or 4.2 or 4.2 intercooled??????? Oil change intervals and viscosity ratings are all different.
AnswerID: 24599

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