Which AMSOIL Tier Is For Me?

Which AMSOIL tier is best for my vehicle?

This can be a tricky question that can depend on quite a few variables including: cost, value, oil quality and extended drain interval expectations. The best way to start the discussion is to introduce the 3 tiers of AMSOIL synthetic oils available:

  1. Signature Series = The top tier product that has a drain interval of up to 24,000-km/1 year
  2. Extended Life (XL) Series = API certified middle tier product for those that prefer to change their oil twice a year with a drain interval of 16,000-km/6-months
  3. Original Equipment (OE) Series = API certified introductory tier with the lowest cost synthetic in the AMSOIL line for those interested in trying AMSOIL products and maintaining manufacturer warranties by using the drain interval specified by the equipment manufacturer

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2009 Mitsubishi Outlander Differental & Transfer Case

I took my 2009 Mitsubishi Outlander to Erin Mills Master Mechanic to get the transfer case and rear diff fluids changed out. Replacing the OEM fluid with AMSOIL Severe GearĀ® Synthetic Extreme Pressure (EP) Gear Lube 75W-90 (SVG).

I wasn’t confident about my plan to use wheel ramps on the down slope of my driveway to get an almost level vehicle. What I really needed was a lift so I reached out for some help to the local mechanic shops in my area. Master Mechanic Erin Mills was happy to install my own fluids for reasonable labour rates. An average oil and filter change would run abut $20 – call ahead to make sure the bays aren’t filled.

Back to the rear diff. The drain plug has a 10mm hex head which is near the bottom, not sure of the size of the fill plug above it to the right.

It is a really simple drain and fill – make sure you get the fill bolt cracked before you try the drain. Once you get the drain out, open the fill completely and make sure your catch basin is in a good spot for full flow – it’s only ~0.5L so there isn’t as much head pressure as the crankcase oil. You require a level vehicle to fill the diff/transfer case. Pump in the new fluid until it overflows then insert the fill plug and you’re done.
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Transfer Case

I attempted to replace the fluid in my Mitsubishi Outlanders transfer case tonight with AMSOIL Severe GearĀ® Synthetic Extreme Pressure (EP) Gear Lube 75W-90 (SVG).

Ran into a bit of a problem once I realized the drain bolt was a hex head and I don’t have the correct socket. The 3/8″ hex from my old Chevy Cavaliers brake calipers fit but was a little loose. Just looked up SAE to metric conversions and 3/8″ is 9.525mm so it looks like a 10mm hex head for the drain bolt.

I didn’t want to strip out the hex plug with the wrong sized socket so I packed it in for tonight. Tomorrow I’ll call the dealership get the fastener sizes. I was able to get a 17mm socket over the standard bolt head of the fill plug.

Power Steering Fluid

I replaced the power steering fluid in my Mitsubishi Outlander over the past two weeks with Synthetic Universal Power Steering Fluid (PSF).

Be sure to check the application guide for your vehicle as some use ATF – like the 2006 Pontiac Vibe – instead of PSF.

Using a hand pump I was able to remove about 150ml of fluid from the reservoir at a time. Then I drove the vehicle for a day to work the new fluid into the system. I did this for 3 bottles of PSF which is ~1.5L since the power steering system capacity is 1L on my Outlander.
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