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700/900 Series General Forum for the Volvo 740, 760, 780, 940, 960 & S/V90 cars |
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M47 5 Speed Gearbox .....Views : 1412 Replies : 19Users Viewing This Thread : |
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Aug 17th, 2018, 21:37 | #12 | |
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Below is the later recommendation from volvo using a modern oil .. but yours will be fine with a normal red Dextron III oil . 1 litre 1161645 A multigrade synthetic transmission oil intended for manual transmissions in passenger cars. The oil has very good low temperature characteristics and a lowest flow point of at least -48°C. The transmission oil is recommended for all model years of types M45, M46, M47, M90 and M5M42 in S-/V40 with GDI engine and of type M56, M58 and M59 up to and including model year 1995. Technical data Quality: API GL-4 Volvo Std 1273,08 which describes transmission oil 97308 Viscosity: SAE 75W Color: Brown Density: 885 kg/m³ Base: Synthetic Lowest flow point -48 °C (104°F) Viscosity at 40 °C: 67.8 mm² /s Viscosity at 100 °C: 10.5 mm² /s
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Aug 17th, 2018, 21:44 | #13 |
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Dextron???
GM would be spinning in their epicyclic gear train! The only "T" that should be anywhere near Dexron should be in your mug while you wait for it to drain!
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Aug 18th, 2018, 08:40 | #14 |
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My Haynes manuals quote Duckhams Q-Matic or ATF type F or G for the 240, with an admonition NOT to mix the oil types, and either Volvo Thermo Oil or Duckhams QXR for the 700-series M47 boxes.
As my manual for the 940 has been genetically modifed and walked away I can't quote for the M47/900-series combination.
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Aug 18th, 2018, 11:32 | #15 |
bob12
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I decided I would have a look on my PC to see what little gems I had stored away!
The first thing I then saw was the Data Pocket Booklet for 700's etc 91/97. That's answered my question. Don't know why I didn't look at it before! All I have to do now is work out what Volvo put in the gearbox: ATM F/G or Synthetic. |
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Aug 18th, 2018, 11:44 | #16 |
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Alternatively Bob, you could completely drain the box and refill with your chosen oil.
If it's any help, the auto-box in my Rover that i use Carlube ATF-U in is a thinly disguised manual box with electro-hydraulic control of the shifting and it works very well in that.
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Aug 21st, 2018, 13:12 | #17 | |
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At least the alternative of Type F/G pins it down to a definitive performance specification. |
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Aug 21st, 2018, 18:40 | #18 |
bob12
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Guess it's a drain and refill, but even if that means a change between synthetic and mineral, or vice versa, that's not recommended. Maybe I will draw a small sample and send it off for a simple analysis to my friendly lab. guys. Eventually, I will update this post, but don't hold your breath/s!! Bob
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Aug 22nd, 2018, 14:21 | #19 |
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Aug 22nd, 2018, 15:02 | #20 | |
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This might explain it a bit better : https://www.lingshondaparts.com/hond...0?mod_01=21340 That's the auto box, i've used the countershaft assembly to illustrate how close it is to a manual box. By comparison, the manual : https://www.lingshondaparts.com/hond...1&block_05=hcr Spot the difference! Now compare it to this cutaway view of a ZF4HP22 "traditional" automatic box : As you can see, the planetary gear sets are going to be much heavier, make the box longer and overall, much less efficient. Also the Honda/Rover box has a two-stage lock-up clutch on the torque converter which is handy for improving economy when driving and because of a clever set-up on over-run, gives vastly improved engine braking over the traditional auto box.
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