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Old Feb 15, 2009 | 07:51 PM
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Default What Oil!

Hey all

Just brought myself a 06 Blobeye STI on friday , my first subaru i was wondering doe anyone know what oil subaru dealers use as standard when they service them?

also

Whats the best oil, fully synt or semi? i want to replace it with the best stuff at the next service
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Old Feb 15, 2009 | 08:08 PM
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I think std fitment for your vintage is 5W-40 (Shell Helix semi-synth ), but any oil with a 'Winter' viscosity of 5W, 10W or 15W is okay, while the 'hot' viscosity should be 40 or 50 (modern 60s are considered too thick for today's motors - ask Oilman).

A 100% Ester Fully Synth is what the flat-4 needs e.g. Millers, Silkolene, Motul, etc.

Read through this for all you'll need to know:-

https://www.scoobynet.com/technical-...-answered.html

Last edited by joz8968; Feb 15, 2009 at 08:11 PM.
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Old Feb 15, 2009 | 08:42 PM
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just had fresh millers, gear and engine.
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Old Feb 15, 2009 | 11:46 PM
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Originally Posted by joz8968
I think std fitment for your vintage is 5W-40 (Shell Helix semi-synth ), but any oil with a 'Winter' viscosity of 5W, 10W or 15W is okay, while the 'hot' viscosity should be 40 or 50 (modern 60s are considered too thick for today's motors - ask Oilman).

A 100% Ester Fully Synth is what the flat-4 needs e.g. Millers, Silkolene, Motul, etc.

Read through this for all you'll need to know:-

https://www.scoobynet.com/technical-...-answered.html
Thanks Joz, done a search and it seems mobl1 15w50 or motul 15w50 are popular choices
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Old Feb 16, 2009 | 12:49 AM
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Yup. Perfectly good choices.
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