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#41
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Mobil 1 0W-40 is a *true* poly-alpha olefin (PAO) base stock oil. Not sure about the EP 5-30, but the 5W-30 Mobil 1 was proven to be a full synthetic blend with cheaper base stock. Still good stuff, but not the "best" by a long shot. Amsoil, Rotella and Redline make some better oils, just to name a few.
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12 E70 3.5i xDrive 03 E46 330i ZHP 01 E53 3.0i 98 E36 323is 12 Audi A4 Quattro 79 Triumph Spitfire 73 MGB |
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#42
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I use Mobil 1 synthetic...5W30 for winter, 10W30 for summer.
Sometimes I use 15W50 in the summer, depending on my mood. Sometimes NAPA has sales with synthetic at $3.50/qt, I usually buy in bulk when it is on sales.
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1998 E39 528i 5sp MT 2006 E53 X5 3.0 6sp MT |
#43
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Best Oil
I bought my X5 a month ago.
Here is how the engine looks after the previous owner only ran Castrol Synthetic on it, oil changed every 10.000 for 126.000 Miles as recommended by BMW. Below is the cylinder head on my previous VW VR6 on Mobil 1 Extended performance after 200.000 Miles on it... Oil changed every 10.000 miles. Go figure which oil is better. Keep in my the VW VR6 2.8 runs super hot all the time... |
#44
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Here's an M62 (4.4L) after 100k miles on BMW (Castrol) oil (changed at full SII change light), and 80k miles on Mobil 1 0w-40 (changed at 60% SII).
Manufacturing grind lines are still visible on the cam lobes. Over 200k miles now and still running OE timing chain guides.
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'03 X5 4.4 Sport, last of the M62s (8-03 build date) I believe in deadication to craftmanship in a world of mediocrity! |
#45
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^Agree with Scott regarding the M1 0w-40 vs 5w-30 - However I've been using Rotella T6 for the last 4 oil changes and the X5 seems to really like it. I change my oil every 5k miles or once a year, whichever comes first. The above images of the 10k oil changes on the M54 make me shudder, even though I've heard that the BMW 5w-30 is a better blend than the off the shelf Castrol 5w-30. Liqui Moly is another great brand of oil if your wallet can handle it, but then you are also into Redline, Amsoil territory. Rotella T6 is $20 a gallon at Walmart, I also use it in my 2011 1700cc P-twin Triumph Thunderbird as it has the additives for wet clutches. I use Redline 75w-90 in the diffs, and Redline MTL in my manny tranny. You can also use D4 ATF in the manny tranny.
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2018 Ram 2500 6.7L Cummins 68RFE 19k miles -Bright White/Black - Big Horn Sport - Crew Cab Short Bed 2013 X5 35D (CEO's) - Born on 5/17/2013 - 82k miles - Alpine White/Cinnamon Brown/Premium Pkg, Sport Activity/Premium Pkg and Sound/20" Style 214/Running Boards |
#46
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I feel the same about the lengthy change interval before owning the X5. However, it has changed since. My oil change interval on the X5 averaged 9k to 10k or annual. Mine looked more like TiAgX5's the last time I opened it up for a VG replacement. It's been running BMW's Castrol during the free maintenance period and various Mobil1 from then on. Still not drinking a drop and look brand spanking new after 108k+ miles.
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2004 X5 3.0i Born 02/04 Delivered 03/04 |
#47
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I don't think it is necessary to vary from MFG. recommend oil weight range. I think most of that belief comes from the good ol' days when oil was less sophisticated, engine tolerances were greater and less consistent. In extremely cold climates using lighter weights was common and it wasn't uncommon to use heavier weights when the blue cloud out the back stopped traffic.
I know I can randomly ask 100 people about why they use a particular brand and their rationale will be based on nothing other than it was recommended by someone they think should know or they have had good experiences with the brand. There are studies that rate the brands. Some are more credible than others but since there are many different winners in the various tests it is easy to use a study to validate our brand choices. Most of us have a brand we swear by. The reality is that there are many brands that meet MFG. specs so most of us have made a valid reason to believe in that brand. I think the oil and filter change interval is the secret to how the inside of the engine looks after 100,000 miles and I would be extremely skeptical of anyone saying an engine problem was because I was using the wrong in spec oil.
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X5 4.6 2002 Black Sap, Black interior. 2013 X5M Melbourne Red, Bamboo interior Dallas |
#48
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2005 X5 4.8IS The Blue ones are always FASTER.... Current Garage: 2005 X5 4.8is 2002 M5 TiSilver 2003 525iT 1998 528i Former Garage Stable Highlights 2004 325XiT Sport 1973 De Tomaso Pantera, L Model 1970 Dodge Challenger T/A 4 sp Alpine White 1970 Dodge Challenger T/A 4 sp GoManGo Green 1971 Dart Sport, “Dart Light” package 1969 Road Runner 383 1968 Ply Barracuda 340S FB Sea-foam Green |
#49
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Ditto. I think this settles. I totally agree whit the statement above. |
#50
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Mine looked like TiAgX5's picture with my VCG replacement at 245,000 miles. I've stuck with the OEM oil & filter since the dealer's been generous with their customer loyalty discount and I haven't had any performance issues.
Now at almost 292,000 miles I am experiencing a little more oil consumption during city driving - about 1 quart per 1000 - but see no blue cloud evidence of loss via valve stems, so I'm thinking it's time to service the CCV system. 2002 X5 3.0 291,800 miles 2014 428i 13,000 miles 2004 325i sold at 123,600 miles 2001 325i sold at 66,000 miles |
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