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Old 06-29-2002, 09:32 AM   #1
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Member#: 16322
Join Date: Mar 2002
Location: salt lake city, utah
1996 impreza 2.2 L

Question mobil1 0-30 synthetic?

is it ok if i run 0-30 synthetic mobil1 up at this elivation or is it to thin of an oil?
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Old 07-01-2002, 06:06 PM   #2
Homicidal Maniac
Member#: 1612
Join Date: Jun 2000
Location: Austin, TX
2008 STI


I run 10-30 TriSynth Mobil 1 year round.

Ideally, you want to run as close to the same cold/hot weight as possible. However, since the temp swings so nicely, it really isn't possible.

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Old 07-01-2002, 06:25 PM   #3
Scooby Specialist
Member#: 10788
Join Date: Oct 2001
Chapter/Region: RMIC
Location: Castle Rock, CO
2016 F150


ditto. Mobil 1 10-30
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Old 07-01-2002, 09:02 PM   #4
Ski Man
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Member#: 5334
Join Date: Mar 2001
Location: Arvada, Colorado
2002 WRX
WR Blue


Mobil 1 5W30 if you do much winter mountain driving. 10W30 is noticably sluggish below zero, and will affect your starting performance. Never had a problem with 5W30 in summer, but I don't spin the turbo hard until I'm at operating temp.
Go with what suits your style, but 0W30 is not really needed/desired outside of areas dealing with -40 and lower.
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Old 07-02-2002, 03:20 AM   #5
Flatirons WRX
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Member#: 17459
Join Date: Apr 2002
Chapter/Region: SCIC
Location: San Diego
CP S2 2.5L STi ShortBlock


Speaking of oils.. does anyone know anything about the synthetic oil Amsoil. Someone I know recommended it, so I went to the website and from what I read.. it looks pretty good. Still, I would still like some feedback from anyone who has used it.

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Old 07-02-2002, 11:40 PM   #6
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Member#: 18105
Join Date: Apr 2002
Chapter/Region: RMIC
Location: Golden, Colorado
1995 95/99 Cst Wagon
93 Turbo Sedan


The 0w synthetics are great oils however they are typically much more expensive and not generally needed. Many race oils are a 0w Multivis and if you get the really good oil then make sure you have an excellent filter to go with it. I recommend 5w-30 Synthetic as the factory does along with a Subaru filter for best performance. The brand of oil you choose is up to you. The multivis reacts as the low number's temp range when cold and the high number's temp range when hot. The Amsoil products are very popular in Europe are reputed to be a very good oil.

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