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  1. J

    Best oil filters - dead horse thread

    Of course there are all types of comments about filters. Thsi guy doe some pretty robust analysis of filter performance and seems scientifically sound (which everyone here cares about) Its an European analysis so several of the filters are not available in the US I need a filter for my 2013...
  2. J

    Leaky sels best additive??

    Read through the reviews here but an still confused. What additives do a good job stopping leaks ( rear main seal and oil pump.) I have seen there are different additives that swell seals and others that hurt them any choices to make out therre? It is a car belonging to a girl I am dating so...
  3. J

    Castrol BOT 720 Electirc Diff

    My 2013 Jag AWS XF has an electronic locking rear diff. Laguar has Diff oil listes are JLR PSec 4001.1 Equivelent is Castrol BOT 270. Just had a ZF shop do the trans oil and tray ( its a kit) and asked them to do the Diff and transfer case at the same time They used Full Synthetic 75-90 as...
  4. J

    engine maintenance Jaguar

    I have a 2013 Jaguar XF, 3.0 V6 supercharged. Stock they are 340 HP, I have mine tuned to an untested 475. I am the second owner and have no records. The car has done 90K miles ( I got it 13 K ago from a jaugar dealer who made an oil change.) OIC are 15K, I did mine at 5k. The 8 cyl versions...
  5. J

    Ravenol Oil specification and opinions?

    So I picked up a 2013 Jaguar XF 3.0 AWD Supercharged and modified it to 460 HP. ( Added a tune and Crank pulley) Jaguar Spec oil Jaguar Land Rover STJLR.51.5122 I have read the car requires C5? (not familiar ) so it seems this poil matches that spec. 7 qts for $ 100 plus shipping Ravenol...
  6. J

    Sludge cleanup MMO experience + 25% MPG, no kidding

    After a long thread on my sludge and oil pressure light experience with a 2006 Saab 9-3 Aero Convertible with 2.8 turbo High Feature GM engine (VVT) After many helpful recommendations I went with 1 very short (500 miles) Mobil 1 ESP OIC and a second with increasing levels of MMO until 1 QT to 5...
  7. J

    Final Sludge Cleanup, HDEO - Diesel ??

    Ok after my panicked sludge cleaning thread (thanks for all the great guidance to everyone) here's where I am and want recommendations on how to continue to finish my engine clean up. Currently running 1QT MMO in 6 QT oil full syn change. (1:5) I am in 250 miles now. How long should I go (500...
  8. J

    Sludged engine help ( I know dead horse), but confused)

    Hi all new member long time lurker. Great story below and I am sorry for starting a new thread, i've read literally hundreds of posts over a bunch of threads to get what would seem as a good few options to answer for my position. I have narrowed down my thoughts and am looking for a bit more...
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