5.0L SC Oil Weight 5w-30 experiences
#1
5.0L SC Oil Weight 5w-30 experiences
Hi, I'm from the Range Rover side but there aren't many of us... I think they only sell about 20k RRs per year. So I would like to ask this here (although I was looking for a dedicated 5.0L sub forum).
I am terribly uncomfortable running 5w-20 or 0w-20 weight oil in a 5.0L V8 Supercharged. It just doesn't seem like it would provide enough protection. It seems downright crazy, a move demanded by CAFE standards not owner investment protection. In fact doesn't jaguar specify the same weight for all of their engines, they do for the Land Rovers and I think that is further proof that the requirement is actually matched to the application.
Is there any records of people here who run heavier weight oil in the Jaguar Land Rover AJV8 Gen III 5.0L Supercharged?
Any personal experiences running a normal oil weight in this engine?
Thanks in advanced.
I am terribly uncomfortable running 5w-20 or 0w-20 weight oil in a 5.0L V8 Supercharged. It just doesn't seem like it would provide enough protection. It seems downright crazy, a move demanded by CAFE standards not owner investment protection. In fact doesn't jaguar specify the same weight for all of their engines, they do for the Land Rovers and I think that is further proof that the requirement is actually matched to the application.
Is there any records of people here who run heavier weight oil in the Jaguar Land Rover AJV8 Gen III 5.0L Supercharged?
Any personal experiences running a normal oil weight in this engine?
Thanks in advanced.
#2
Join Date: Oct 2009
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OW20 and 5W20 have been standard weights for more than a decade. No evidence has surfaced suggesting that there's any problems with them.
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Cliff5.0SC (05-10-2016)
#3
The short version is to look and see what the manufacturer might recommend
in other markets for the same engine/vehicle. In particular Europe. Without
looking, I will bet that ACEA A3/B4 is the warranty requirement in the UK.
One of the EPA rules is that in order to claim a particular mileage result,
the oil that was used in the engine at the time must be cited as the
"preferred oil" in the owners manual. So if they used sewing machine oil
to eke out that last 0.2 MPG, they must cite sewing machine oil as the
preferred oil. Jaguar uses weasel phrases like "recommended for best
fuel economy". Well, that isn't "best engine protection" is it?
The long version:
https://www.jaguarforums.com/forum/x...idance-157906/
in other markets for the same engine/vehicle. In particular Europe. Without
looking, I will bet that ACEA A3/B4 is the warranty requirement in the UK.
One of the EPA rules is that in order to claim a particular mileage result,
the oil that was used in the engine at the time must be cited as the
"preferred oil" in the owners manual. So if they used sewing machine oil
to eke out that last 0.2 MPG, they must cite sewing machine oil as the
preferred oil. Jaguar uses weasel phrases like "recommended for best
fuel economy". Well, that isn't "best engine protection" is it?
The long version:
https://www.jaguarforums.com/forum/x...idance-157906/
Last edited by plums; 03-16-2016 at 03:07 PM.
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Cliff5.0SC (05-10-2016)
#4
You really don't want to run anything other than what's recommended by Jag. All of your engine's critical bearing clearances (crank and cam) and oil controlled functions (cam phasing) are set up for this weight oil. And as long as the 5w20 oil you use has the most current API service rating (SN) it has more than adequate protection for your RR.
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Cliff5.0SC (05-10-2016)
#5
And if the manufacturer has two different oil recommendations?
One in the US that is oriented towards best EPA mileage ratings,
and one in the EU/ROW that is oriented to other criteria.
I suggest the second would be worthy of consideration.
It certainly makes you go hmmm.... when you know that the EPA
forces the oil recommendation in the owners manual to be the same
oil used for the fuel economy tests. The goal there is fuel economy,
not engine protection. Manufacturers are not above "optimising" for
a given result. The recent VW Diesel scandal comes to mind.
One in the US that is oriented towards best EPA mileage ratings,
and one in the EU/ROW that is oriented to other criteria.
I suggest the second would be worthy of consideration.
It certainly makes you go hmmm.... when you know that the EPA
forces the oil recommendation in the owners manual to be the same
oil used for the fuel economy tests. The goal there is fuel economy,
not engine protection. Manufacturers are not above "optimising" for
a given result. The recent VW Diesel scandal comes to mind.
#6
plums:
While your point of checking the "other market" ratings is, of course, valid, the original discussion was the merits of using an oil with viscosity ratings greater than the manufacturer's recommendation. I asume you would agree that a higher viscosity oil should not be assumed necessarily "better" unless it is recommended by the manufacturer in a different market?
While your point of checking the "other market" ratings is, of course, valid, the original discussion was the merits of using an oil with viscosity ratings greater than the manufacturer's recommendation. I asume you would agree that a higher viscosity oil should not be assumed necessarily "better" unless it is recommended by the manufacturer in a different market?
#7
Hi, I'm from the Range Rover side but there aren't many of us... I think they only sell about 20k RRs per year. So I would like to ask this here (although I was looking for a dedicated 5.0L sub forum).
I am terribly uncomfortable running 5w-20 or 0w-20 weight oil in a 5.0L V8 Supercharged. It just doesn't seem like it would provide enough protection. It seems downright crazy, a move demanded by CAFE standards not owner investment protection. In fact doesn't jaguar specify the same weight for all of their engines, they do for the Land Rovers and I think that is further proof that the requirement is actually matched to the application.
Is there any records of people here who run heavier weight oil in the Jaguar Land Rover AJV8 Gen III 5.0L Supercharged?
Any personal experiences running a normal oil weight in this engine?
Thanks in advanced.
I am terribly uncomfortable running 5w-20 or 0w-20 weight oil in a 5.0L V8 Supercharged. It just doesn't seem like it would provide enough protection. It seems downright crazy, a move demanded by CAFE standards not owner investment protection. In fact doesn't jaguar specify the same weight for all of their engines, they do for the Land Rovers and I think that is further proof that the requirement is actually matched to the application.
Is there any records of people here who run heavier weight oil in the Jaguar Land Rover AJV8 Gen III 5.0L Supercharged?
Any personal experiences running a normal oil weight in this engine?
Thanks in advanced.
I've run the OEM specified weight throughout the life of my XFR (77k miles now) and have never had an issue in regards to protection. My vehicle has been through a few track events with both extended road course use and drag race use. Even in these high stress environments, I have never found any semblance of metal shavings when changing the oil.
The only thing I do differently is that I service my car at half the recommended intervals and always change my oil after the vehicle is subjected to a high stress situation. With all this being said, I don't think you have much to worry about in regards to engine damage with the factory weight. Just always make sure your oil levels are topped off!
- Pat
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Cliff5.0SC (05-10-2016)
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#8
And if the manufacturer has two different oil recommendations?
One in the US that is oriented towards best EPA mileage ratings,
and one in the EU/ROW that is oriented to other criteria.
I suggest the second would be worthy of consideration.
It certainly makes you go hmmm.... when you know that the EPA
forces the oil recommendation in the owners manual to be the same
oil used for the fuel economy tests. The goal there is fuel economy,
not engine protection. Manufacturers are not above "optimising" for
a given result. The recent VW Diesel scandal comes to mind.
One in the US that is oriented towards best EPA mileage ratings,
and one in the EU/ROW that is oriented to other criteria.
I suggest the second would be worthy of consideration.
It certainly makes you go hmmm.... when you know that the EPA
forces the oil recommendation in the owners manual to be the same
oil used for the fuel economy tests. The goal there is fuel economy,
not engine protection. Manufacturers are not above "optimising" for
a given result. The recent VW Diesel scandal comes to mind.
Oh, and the EPA requires the same oil used for testing to be recommended in the manual to keep the playing field even, and ensure that the test results are repeatable and VALID to the consumer.
VW knew the rules, and decided the rules didn't apply to VW. WRONG!
#9
#10
And Jag still uses the 3.0 in both NA AND SC forms. The fact is ALL of Jaguars engines are dated and my guess is TATA is working to go to new engines with and without turbos as MB, BMW and Audi have done and making BIG turbo power on low V8 displacements. Again the rules are the same for all, how you play WITHIN them is your choice.
Last edited by Bigg Will; 03-23-2016 at 04:16 PM.
#11
#12
Last edited by Bigg Will; 03-25-2016 at 10:50 AM.
#13
#14
#15
#16
Engine building 101. The journals are what the connecting rods (Big end) are joined to and what the crank is seated in the block on, and although SOME high performance crankshafts are drilled (like this GM LS) or even cross drilled for enhanced upper engine oil flow, LUBRICATION for the crankshaft is provided by the oil film ON the crankshaft in the space between the crankshaft bearings and crankshaft. Crankshaft bearings can be grooved the enhance this film As they are in my pic BELOW↓, but its still oil ON, not IN the crankshaft AS FAR AS LUBRICATION.
HANDS ON HELPS!
Sorry for the thread Hijack!
Last edited by Bigg Will; 03-26-2016 at 12:09 PM.
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Cliff5.0SC (05-10-2016)
#17
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Cliff5.0SC (05-10-2016)
#18
You chose I guess to address how the oil gets there?????
SO! if you mean THE FACTS then yes I'll argue them, otherwise you end up with crap like this↓
But for you dpk it's still a mirror right?
MOVING ON NOW!
Last edited by Bigg Will; 03-26-2016 at 01:26 PM.
#19
#20
Well, to be exact, the original post was about EXPERIENCE with lightweight oil. Which is in and of itself pretty silly, since no one that I know of here could really give meaningful data about that since that would require the measurement of engine wear for many examples of high mileage engines with both lightweight and heavyweight oil.
And then an even sillier discussion broke out.
And then an even sillier discussion broke out.