RX7 FD3S Diff and Transmission oil change
#1
Junior Member
Thread Starter
RX7 FD3S Diff and Transmission oil change
Morning guys,
Looking to do a oil change on both the transmission and diff on my FD3S this Thur. Not MOT or Tax (project car) so figured since its on 4 jack stands, and level. (no wheels) run car in first gear for 5 minutes and drop the oil. Guessing its a lower drain plug, then fill from the one above.
2 x TRIPLE QX Transmission Oil (75W90 Semi Syn 1 Litre) for Transmission
2 x TRIPLE QX Transmission Oil (EP90 Transmission Fluid 1 Litre) for the Diff
This is not a race car, so not wanting to buy expensive oil, just a commuter.
Any advice would be great, any strange socket sizes, will i need replacement washers (if so what size) and will i need thread tape to seal it up.
Looked around and very messy, most end up talking about car ramps or upgrades and get of topic.
Looking to do a oil change on both the transmission and diff on my FD3S this Thur. Not MOT or Tax (project car) so figured since its on 4 jack stands, and level. (no wheels) run car in first gear for 5 minutes and drop the oil. Guessing its a lower drain plug, then fill from the one above.
2 x TRIPLE QX Transmission Oil (75W90 Semi Syn 1 Litre) for Transmission
2 x TRIPLE QX Transmission Oil (EP90 Transmission Fluid 1 Litre) for the Diff
This is not a race car, so not wanting to buy expensive oil, just a commuter.
Any advice would be great, any strange socket sizes, will i need replacement washers (if so what size) and will i need thread tape to seal it up.
Looked around and very messy, most end up talking about car ramps or upgrades and get of topic.
#2
Urban Combat Vet
iTrader: (16)
Running the car in gear with no load for a few minutes won’t help anything IMO. If it’s on stands, stable and level just go ahead and do the service. Open the fill plugs first, then BOTH drains on the transmission. Here in the U.S. most of the chain parts stores carry the inexpensive gear oil pumps that just screw onto the containers the oil comes in. And you’ll need 2.5 liters for the transmission. Can’t remember off-hand how much for the differential but I think it’s more than 1 liter. Check the FSM.
One fill plug (A), two drain plugs (B) and (C). Seems like guys want to mess with the hex socket plug or one of the bolts pictured. Don’t be one of those guys. IIRC that big drain plug (C) and the diff drain plug both have magnets. Some fine grayish powder is common. Just wipe them clean. Actual visible shrapnel is not and usually an indication of a problem.
Oh, and don’t over-tighten the fill plug. I’ve seen them almost screwed thru the transmission case. It’s pipe thread. Just a little Teflon tape or paste and snug it up. Same with drain plug (B).
One fill plug (A), two drain plugs (B) and (C). Seems like guys want to mess with the hex socket plug or one of the bolts pictured. Don’t be one of those guys. IIRC that big drain plug (C) and the diff drain plug both have magnets. Some fine grayish powder is common. Just wipe them clean. Actual visible shrapnel is not and usually an indication of a problem.
Oh, and don’t over-tighten the fill plug. I’ve seen them almost screwed thru the transmission case. It’s pipe thread. Just a little Teflon tape or paste and snug it up. Same with drain plug (B).
Last edited by Sgtblue; 10-16-18 at 06:56 AM.
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#3
Junior Member
Thread Starter
Assuming the rear only has one drain and the fill on the top. Will get 3 litres of transmission and 2 for rear diff. Ill use some telflon tape on the drain plugs and should be good to go.
Only last question, is the oils i am using ok. Not sure if it should be semi or fully Syn for the transmission.
#4
Urban Combat Vet
iTrader: (16)
I’m not sure the ratings are the same there, but if they meet what is required in YOUR FSM they’re fine. Here that’s GL-4 or 5. Full synthetic is fine too, as long as it meets standards. Just check the container. If the store carries replacement washers for the plugs great. But I have re-used then without issue.
The only other thing I can think of is to wear old cloths. Gear oil stinks and doesn’t wash out.
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The only other thing I can think of is to wear old cloths. Gear oil stinks and doesn’t wash out.
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Last edited by Sgtblue; 10-16-18 at 07:29 AM.
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#5
RX7FD3S
iTrader: (3)
I run Neo 75W90 HD gear oil in my daily driven FD. Gear engages noticeably smooth. I've been using it for decades. One jug fills both transmission and diff. Here's a old thread comparing Neo and Redline. https://www.rx7club.com/3rd-generati...rience-371203/
There's two drain plugs on the transmission. Here's a youtube video that may help
here's the FSM page from another thread on the forum
There's two drain plugs on the transmission. Here's a youtube video that may help
here's the FSM page from another thread on the forum
The following users liked this post:
Neo (04-19-21)
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