First F-Type Oil Change @ 1500 miles--Lessons Learned
#41
#42
https://www.motul.com/system/product...pdf?1342446301
#43
Motul makes one, but may be even harder to find in the US than Castrol...
https://www.motul.com/system/product...pdf?1342446301
https://www.motul.com/system/product...pdf?1342446301
#44
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ApolloBeachRetiree (03-13-2015)
#45
Lots of varying opinions out there on the C945A and C925A specs. For example, check out this XF/XFR thread for a bumpy ride of varying opinion on C925A : https://www.jaguarforums.com/forum/x...tic-oil-95827/
#46
Nothing to taking the cover off and replacing too. "Rubber grommet-over-stud" is a common fitment for engine covers these days. I have the "R," though I would expect to see a similar design for the other motors.
Just place your hands on the cover (on either side), equally spaced apart, and gently lift to release the two grommets on that side. Move over to the other side and repeat to release the other two grommets. Four in total. Cover comes off easily. To reinstall, I simply place my hands around the "J" and the "R" on each side of the cover and gently press to ensure all 4 grommets are properly seated. If you have the cover positioned correctly, you'll feel the grommets reseating themselves.
The pics show the grommet-stud locations. Pretty difficult to break anything. No plastic clips, i.e., no little PITAs to worry about). But, when you replace the cover, be sure you have the cover correctly aligned over the various cover cutouts (especially on the passenger's side) before pressing down on the cover.
Attachment 105008
Attachment 105009
Attachment 105010
Attachment 105011
Attachment 105012
Just place your hands on the cover (on either side), equally spaced apart, and gently lift to release the two grommets on that side. Move over to the other side and repeat to release the other two grommets. Four in total. Cover comes off easily. To reinstall, I simply place my hands around the "J" and the "R" on each side of the cover and gently press to ensure all 4 grommets are properly seated. If you have the cover positioned correctly, you'll feel the grommets reseating themselves.
The pics show the grommet-stud locations. Pretty difficult to break anything. No plastic clips, i.e., no little PITAs to worry about). But, when you replace the cover, be sure you have the cover correctly aligned over the various cover cutouts (especially on the passenger's side) before pressing down on the cover.
Attachment 105008
Attachment 105009
Attachment 105010
Attachment 105011
Attachment 105012
Lawrence
#47
Look at the data Redline data sheet (link below). Data sheets from other manufactures will confirm. WSS-M2C925-A specs conform to GF-4 specs. WSS-M2C945-A conforms to GF-5. GF-4 specs are less rigorous than GF-5. Any oil conforming to the latter meets or exceeds all of the specifications of the former. The top synthetic oil manufacturers don't bother to carry multiple spec grades. They will generally blend to the most rigorous specs they economically can.The top manufacturers are now blending to GF-5.
Red Line Synthetic Oil - Motor Oil - 5W20 Motor Oil
This histogram shows the relative difference in performance parameters:
Red Line Synthetic Oil - Motor Oil - 5W20 Motor Oil
This histogram shows the relative difference in performance parameters:
Last edited by Unhingd; 01-25-2015 at 08:13 PM.
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Foosh (01-25-2015)
#48
I appreciate your effort here. I should have worded my question better.
My concern is not whether C945A is more rigorous than C925A (to which we both appear to agree), but whether Jaguar has acknowledged C945A in place of C925A for use in the F-Type 5.0L under its warranty coverage. Stated differently, I was aware of the upgrade to GF-5 spec from GF-4 spec for the C945A oil. But, it's my understanding that Jaguar still specifies certain oil properties that are inconsistent with the requirement of GF-5, properties which call for the C925A (GF-4) formulation for warranty coverage.
My concern is not whether C945A is more rigorous than C925A (to which we both appear to agree), but whether Jaguar has acknowledged C945A in place of C925A for use in the F-Type 5.0L under its warranty coverage. Stated differently, I was aware of the upgrade to GF-5 spec from GF-4 spec for the C945A oil. But, it's my understanding that Jaguar still specifies certain oil properties that are inconsistent with the requirement of GF-5, properties which call for the C925A (GF-4) formulation for warranty coverage.
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JgaXkr (01-27-2015)
#49
I appreciate your effort here. I should have worded my question better.
My concern is not whether C945A is more rigorous than C925A (to which we both appear to agree), but whether Jaguar has acknowledged C945A in place of C925A for use in the F-Type 5.0L under its warranty coverage. Stated differently, I was aware of the upgrade to GF-5 spec from GF-4 spec for the C945A oil. But, it's my understanding that Jaguar still specifies certain oil properties that are inconsistent with the requirement of GF-5, properties which call for the C925A (GF-4) formulation for warranty coverage.
My concern is not whether C945A is more rigorous than C925A (to which we both appear to agree), but whether Jaguar has acknowledged C945A in place of C925A for use in the F-Type 5.0L under its warranty coverage. Stated differently, I was aware of the upgrade to GF-5 spec from GF-4 spec for the C945A oil. But, it's my understanding that Jaguar still specifies certain oil properties that are inconsistent with the requirement of GF-5, properties which call for the C925A (GF-4) formulation for warranty coverage.
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JgaXkr (01-27-2015)
#50
Jaguar probably stuck to the old (lesser) spec because that was the best spec available when the engine was developed.
#51
More and more, manufacturers have marketing agreements with oil companies, which is the likely reason. Stickers are appearing in engine compartments (e.g. Mercedes recommends Mobil 1, Jaguar recommends Castrol, etc.)
While I cannot imagine that JLR would attempt to void someone's warranty for using a higher spec oil that meets or exceeds their recommendation, stranger things have happened. However, it's difficult to imagine that they could make that stick in court.
The bottom line is, the key to no-hassles warranty service is to have the dealer enter records for your car into the JLR system so that it is documented as having had all the recommended maintenance. For that, it's just easier to go to the dealer for annual service, at minimum.
It wouldn't surprise me if some JLR dealers are using oils other than Castrol, since they are independent businesses looking for the best deal.
While I cannot imagine that JLR would attempt to void someone's warranty for using a higher spec oil that meets or exceeds their recommendation, stranger things have happened. However, it's difficult to imagine that they could make that stick in court.
The bottom line is, the key to no-hassles warranty service is to have the dealer enter records for your car into the JLR system so that it is documented as having had all the recommended maintenance. For that, it's just easier to go to the dealer for annual service, at minimum.
It wouldn't surprise me if some JLR dealers are using oils other than Castrol, since they are independent businesses looking for the best deal.
#52
More and more, manufacturers have marketing agreements with oil companies, which is the likely reason. Stickers are appearing in engine compartments (e.g. Mercedes recommends Mobil 1, Jaguar recommends Castrol, etc.)
While I cannot imagine that JLR would attempt to void someone's warranty for using a higher spec oil that meets or exceeds their recommendation, stranger things have happened. However, it's difficult to imagine that they could make that stick in court.
The bottom line is, the key to no-hassles warranty service is to have the dealer enter records for your car into the JLR system so that it is documented as having had all the recommended maintenance. For that, it's just easier to go to the dealer for annual service, at minimum.
It wouldn't surprise me if some JLR dealers are using oils other than Castrol, since they are independent businesses looking for the best deal.
While I cannot imagine that JLR would attempt to void someone's warranty for using a higher spec oil that meets or exceeds their recommendation, stranger things have happened. However, it's difficult to imagine that they could make that stick in court.
The bottom line is, the key to no-hassles warranty service is to have the dealer enter records for your car into the JLR system so that it is documented as having had all the recommended maintenance. For that, it's just easier to go to the dealer for annual service, at minimum.
It wouldn't surprise me if some JLR dealers are using oils other than Castrol, since they are independent businesses looking for the best deal.
#54
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