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Old 07-24-2010, 09:08 AM   #1
E30Rider
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should i move to synthetic oil on my e30??

hey guys i was thinking last night and i have it in my had the last couple weeks , i use Castrol syntec on my crv and my moms accord and they both run very nice never had any problems at all, now should i use it on my e30 325e 2.7L, ived been using castrol gtx 10w-40 all season round since last year before i ran 20w50 witched kinda sucked, it burns lil oil here and there slowly getting better, and what grade should i go with running on synthetic...

let me know thanks
bruno
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Old 07-24-2010, 10:36 AM   #2
Mystikal
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Nope. 20W50 summer, 10W40 winter, non-syn.
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Old 07-24-2010, 09:40 PM   #3
noid
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Jason is right about 20w50 in the summer 10w40 in the winter.

However you can go up to synthetic oil, be aware though that the synthetic oil may dislodge carbon deposits left over from mineral oil which would then find their way all over your engine. A good rule of thumb is to move up to a slightly thinner semi-synthetic and keep oil changes in a smaller gap then usual (say 1000-1500km) for about 2-3 times, then go upto full synthetic oils and repeat smaller gaped changes 2-3 times. Then run full synthetic as you normally intend.

Two main "problems" you should consider:

1) The carbon deposits that dislodge maybe acting as seals for things like your piston rings.

2) May create new found leaks, because of dislodging of carbon and just because the synthetic oil finds its way through cracks better.
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Old 07-25-2010, 12:29 AM   #4
bart325is
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I used synthetic 1 time in a previous car that I had and after about 2K the rear main started leaking. I will never switch a car again. Keep using DinoCo.
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