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Old 02-13-09, 06:04 AM   #31
jane12
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Quote:
Originally Posted by GS4_Fiend View Post
I used Castrol Fully Synthetic also. Love the results. Change it every 3000 miles. Every time I drain it I check the oil level first to see if it burned oil and it does not at all! When oil is drained out after 3000 miles it's changes to brown only not black. Good stuff! High recommend!
You should go 5K easy with synthetic. Kinda defeats one of the reasons to use it if you only go 3K between changes.
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Old 02-13-09, 08:49 AM   #32
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5w20 every 5K

good thing for mobile 1 is that you can get it almost anywhere (esp Walmart)
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Old 02-13-09, 04:04 PM   #33
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Originally Posted by v8soarer91 View Post
0w is way too thin, no wonder you used oil

Mobil1 Fully Synthetic 5W-30 gets very very thin with the heat generated by turbo cars.

A fair few people spin bearings in the turbo, and sometimes main bearings.

Recommend changing to Mobil Semi Synthetic 10W-30 or 10W-40 (is better)

My next door neighbour has over 40 years experience in engine building from 50hp - 3000hp supercharged, NA, NOS etc. bridge to bridge, ski boat, track cars, 10yrs top fuel engine mechanic, summernats HP heros, plane and truck, and your average daily.

"The more that people use non standard oil other than what is recommended for their car, the more it keeps me in business"
1) 0w-30 German Castrol is almost a 40 weight at hot temperature. No oil is too thin at startup.
2) what is "standard oil"? Recycled bulk oil that is used at dealers?
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Old 02-14-09, 05:28 PM   #34
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I used mobil1 10W-30 fully synthetic every 5,000k miles ,with no problems
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Old 02-26-09, 03:38 PM   #35
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Quote:
Originally Posted by v8soarer91 View Post
0w is way too thin, no wonder you used oil
Lexus specifies 0w-20 as the oil grade for 2010 RX350. This is the official user manual excerpt, I reposted here from a RX350 thread.

This will put the end of wife's tale of 0w is too thin, which is a false belief that does not have any scientific support. Also validates the prudent approach that many 0w-20 users have practiced safely for over 5 years without Toyota's official blessing.
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Old 03-01-09, 03:38 PM   #36
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5w-30 Castrol Fully Synthetic every 3000 miles. Doesn't burns oil and when changed, looks 20-30% dirty. Good Oil!
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Old 03-05-09, 04:00 PM   #37
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Nobody has mentioned it yet and well I have never used it but I thought ROYAL PURPLE was suppsoe to be a great oil?
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Old 03-07-09, 03:36 PM   #38
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currently have RP n would like to know if its safe to go 5k intervals on a Supercharged GS4...
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Old 03-07-09, 05:25 PM   #39
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Depends how hard you drive. If you're really unsure, send your oil in for an used oil analysis test. They'll give you an idea on what your service interval should be. The cost is about $25 I believe.
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Old 03-07-09, 06:36 PM   #40
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but that $25 can buy you an oil change hah
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Old 07-22-10, 10:43 AM   #41
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mobil 1 syn 0w-40 is the best (for ferrari, porsche) , and then comes 0w-30.
5w-30 is not as good, but still better than other brands
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Old 07-22-10, 09:03 PM   #42
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Just got my 00' LS400,oil was changed right before I bought it. I have used Mobil1 syn in my 97' Accord with no problem,also used Amsoil with no problem.But I have heard on this forum about Lubro Moly and will have to research it to find out more.
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Old 07-22-10, 09:34 PM   #43
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Older thread, I'll jump in.

Mobil 1 intervals at 8K miles. I did one to 13K and the oil analysis from Blackstone at the time indicated the additive package was still adequate. The comment section had wear typical at 5K use. So M1 does well even extended in this particular engine. 8-10K have been good reports so I tend to do it at 8K miles average. This is with the older 90915-20004 oil filters and OEM air filter. I'm due for another oil analysis since the last one was about some 50K miles ago. Just to see where the engine is at with 147K miles now.

*YMMV so check how oil does in your car for the conditions you drive.
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Old 07-23-10, 11:06 AM   #44
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i've used mobil 1 but it burns oil for some bizzare reason, so i switched to castrol fully syn it stopped and runs smoother for me.
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Old 07-24-10, 07:52 PM   #45
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Quote:
Originally Posted by RA40 View Post
Older thread, I'll jump in.

Mobil 1 intervals at 8K miles. I did one to 13K and the oil analysis from Blackstone at the time indicated the additive package was still adequate. The comment section had wear typical at 5K use. So M1 does well even extended in this particular engine. 8-10K have been good reports so I tend to do it at 8K miles average. This is with the older 90915-20004 oil filters and OEM air filter. I'm due for another oil analysis since the last one was about some 50K miles ago. Just to see where the engine is at with 147K miles now.

*YMMV so check how oil does in your car for the conditions you drive.
I'm planning on sending an oil sample to Blackstone right after my next oil change. I have Mobil 1 syn and have not changed my oil since last November. I haven't been driving the car as often but oil level and color is still good.
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