Mobil 1 Extended Performance oil change interval
07-03-07, 12:06 PM
#16
Super Moderator
Lexus recommends those viscosities not just for cold start performance, but also for better fuel economy. As I recall, the language in the owner's manual says that 10W-30 can be used if 5W-30 isn't available, but they recommend switching back at the next change. From the Blackstone UOA reports that folks have posted, it doesn't look like there is any need to fear depleting the viscosity improvers in the 5W-30 and 5W-20 grades even with extended drain intervals.
Yes in 65f weather we freeze our butts off here 
Last edited by Bichon; 07-03-07 at 12:11 PM.
07-03-07, 12:16 PM
#17
At 7 or 8K miles send out a sample (Add TBN test $32.50 total) to Blackstone for used oil analysis and indicate you plan on an extended change. They will tell you how much life is left in the oil. I doubt you will need to change the filter at 5K miles. Why guess at how long it will last. You would only need to test once.
PS Next change go with a 0w-20 pure synthetic!
Koz
PS Next change go with a 0w-20 pure synthetic!
Koz
07-05-07, 04:24 AM
#20
Koz
07-05-07, 10:52 AM
#21
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Well ASM can't be worst than Mobil1 EP which is what I'm currently running. From reading on Bitog it seems it is not even a full synthetic. Most of it is highly refined regular oil.
07-05-07, 12:17 PM
#22
11-24-08, 01:01 PM
#23
this is really kool... jw where are you guys buying the filters from dealership? found an awsome site guys 4 bucks for oil filter...http://www.irontoad.com/Merchant2/me...Code=2007is350 dealer wants 14.43 out the door for filter...
Last edited by i3urton; 11-24-08 at 03:24 PM.
11-24-08, 01:24 PM
#24
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With higher mileage oil...the detergent level is increased to allow infrequent oil changes...the real benifit on the oil change is to remove spent detergent and the byproducts from the combustion process...most of us like to change more frequently, feeling better that the contamination level stays at a minium for a lesser chance of sludge build up. I say the product (mobil 1 EP) should do what it specifiys with the higher detergent level, allowing longer service times..but if you feel better changing it sooner...then why not. I myself like between 5000-7000K between service...depending on my lazyness mood. Always with synthetic oil....so this allows me to get it done when I "feel" like it. My 2 cents!
11-24-08, 07:01 PM
#26
Last oil change I did myself, I used Mobil 1 Extended Performance 10w-30 which is "designed to provide protection and performance at extended oil change intervals of up to 15,000 miles or 1 year." I've just hit my next 5k miles and wanted your opinions on if I should change it now or wait another few thousand since this oil was designed for extended oil change intervals.
I do 90% highway driving if that makes any difference.
Here is a few links to Mobil 1's FAQ on their Extended Performance oils just to give you an idea of they oil and their claims.
http://www.mobil.com/USA-English/Lub...erformance.asp
http://www.mobiloil.com/USA-English/...ance_FAQs.aspx
I realize I will get responses from "change it every 3k, better safe than sorry" to "change it when you want, it's your car" to "don't use Mobil 1" to "yeah, should be fine to change at 10k".
I guess I'm looking for confirmation from your guys based on your past knowledge and the manufacturers statement on 15k oil change interval that running up to 7.5k or 10k intervals shouldn't cause a problem.
I'm just trying to optimize my oil change interval based on the oil I'm using. Why change it at 5k if the oil is good for 10k or 15k?
Also, didn't see this type of post before or in the search so sorry if it's been answered.
Thanks guys!
I do 90% highway driving if that makes any difference.
Here is a few links to Mobil 1's FAQ on their Extended Performance oils just to give you an idea of they oil and their claims.
http://www.mobil.com/USA-English/Lub...erformance.asp
http://www.mobiloil.com/USA-English/...ance_FAQs.aspx
I realize I will get responses from "change it every 3k, better safe than sorry" to "change it when you want, it's your car" to "don't use Mobil 1" to "yeah, should be fine to change at 10k".
I guess I'm looking for confirmation from your guys based on your past knowledge and the manufacturers statement on 15k oil change interval that running up to 7.5k or 10k intervals shouldn't cause a problem.
I'm just trying to optimize my oil change interval based on the oil I'm using. Why change it at 5k if the oil is good for 10k or 15k?
Also, didn't see this type of post before or in the search so sorry if it's been answered.
Thanks guys!
My basic rule of thumb is double Manufactuers recommended oil change mileage interval for conventional oil and use Mobil 1 full synthetic of same viscosity
11-25-08, 06:41 PM
#28
Lexus Fanatic
11-25-08, 09:34 PM
#29
Lexus Fanatic
I tried that route on my G35 and I had issues with oil consumption. Not safe if you like to tap the rev limiter while dusting the BMW driver
11-25-08, 10:29 PM
#30
Lexus Fanatic