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Maintenance Tech This forum is for discussion of all aspects of maintenance that should be performed on the FJ Cruiser to keep it operating at maximum efficiency.
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Old 08-08-2009, 11:03 AM   #1 (permalink)
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Question Recommended Oil Viscosity

Yeterday I went to NAPA to get oil since I have decided to change it for myself and switch over to synthetic.

The NAPA salesman shows me that Toyota recommends 5W-20. I looked at the screen and confirmed it since 5W-20 is an odd viscosity to me. So I buy 5w20 Castrol Full Synthetic.

Today, I begin the oil change and the cap says:
API SL 5W-30

Could someone make a recommendation here for me please?

I live in West Virginia so I don't have too many days of temprature extremes but there are significant grades when crossing the mountains . And I do pull a trailer (5X8)occasionally full of camping equipment.

Help please with sound advice.
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Old 08-08-2009, 11:48 AM   #2 (permalink)
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Re: Recommended Oil Viscosity

I stick with mobil one 10w-30. Its a good all around vic and Mobil 1 is the bset Oil from what I read, from experience my engine has loved it, it doens't burn off as quick and I run high rpm and long runs on the Auto Bahn.
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Old 08-08-2009, 12:09 PM   #3 (permalink)
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Re: Recommended Oil Viscosity

i use mobil 1 5w-30.
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Old 08-08-2009, 12:20 PM   #4 (permalink)
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Re: Recommended Oil Viscosity

Not to high jack the thread but anyone use the magnetic plug? Been wondering if it actually works worth a damn and will collect any metel shavings there may be floating around. Ive never seen any but just curious
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replaced tweeters with high performance 4's
Thuli snowboard rack

next up....
Icon suspension
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Old 08-08-2009, 12:50 PM   #5 (permalink)
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Re: Recommended Oil Viscosity

I also use Mobil 1 5w30. I work for Mercedes benz and Ive seen some nasty other synthetic oils not keep up with Mobil 1. After seeing what Ive seen Im never using anything else.
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Old 08-08-2009, 02:24 PM   #6 (permalink)
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Re: Recommended Oil Viscosity

The correct spec for the FJ is 5W30.

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Old 08-08-2009, 02:35 PM   #7 (permalink)
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Re: Recommended Oil Viscosity

Toyota recommends 5-30 engine oil in the owners manual.

I use Mobil One 5-30 in the summer and 0-30 in the winter with a Purolator Pure One oil filter. Did the same thing with my Tacoma which I sold when I bought the FJ. The Taco went over 300,000 miles still running smooth and strong.
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Old 08-08-2009, 02:48 PM   #8 (permalink)
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Re: Recommended Oil Viscosity

Quote:
Hvacow1 previously said: View Post
I also use Mobil 1 5w30. I work for Mercedes benz and Ive seen some nasty other synthetic oils not keep up with Mobil 1. After seeing what Ive seen Im never using anything else.
That's what my S500 gets, 0-40 Mobil One. Still running great at 7 years old. Takes twice as much oil to change as the FJ, but she does have her advantages too. I love my FJ and my Mercedes equally but differently.
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Old 08-08-2009, 03:07 PM   #9 (permalink)
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Re: Recommended Oil Viscosity

They told me 10w-30. weird. Well doubt it makes much of a difference
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Injen Cold air intake
Borla dual exhaust
Iridium plugs
Yokohama Geo Lander Tires
TT black out grill
Hella Off Road lights
Pioneer 6x5 in door, 4 inchers in dash
KENWOOD DNX5160
replaced tweeters with high performance 4's
Thuli snowboard rack

next up....
Icon suspension
gobi ladder
Doug Thurley Y pipe
Some custom work on the interior
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Old 08-08-2009, 04:57 PM   #10 (permalink)
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Re: Recommended Oil Viscosity

There was a TSB from March 29th 2006 changing it from 5w-30 to 5w-20. There's a thread on this forum about it and the TSB itself. I still use 5w-30 Mobil 1.
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