Just picked the car up, only a short 5 min drive home but changed like butter, need to wait for a cold start but still, just as smooth as before.
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If you drove it away just after it was done, the gearbox oil itself will be cold, if you now what you mean. Outside temps typically 20 degrees too etc, but still, that’s a great start 
Is this the one you got in it?
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Only reason I mention as they took it out for a road test after to check wheelbearings/dif & rear knocking (after having bushes changed 
) so may of still had some warmth in it.
And no not that one I went for this one.
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Great. Yes, I’m sure it’ll be fine. Try it tomorrow or something after it sitting all night. Thanks for getting back as getting a first hand account of a 75w-80 grade gear oil, which isn’t the OEM oil, is a real public service for ND owners!
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No problem, I need it to shift nice from cold for the time being while it’s our main car, once it’s not the main car and I start tracking it I’ll likely put something thicker in, but for now as a daily this should do the job.
I’ll report back with the cold performance!
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Righto lads, final follow up.
Mrs has taken the car this morning, no issue with shifting, she says she can’t tell a difference to the stock stuff, RESULT!
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Good news. Great as your experience will also help in cases where person X gets their gear oil changed at a dealership, and even they don’t use the OEM stuff, and finds the change isn’t as good. At least now there’s another route even in those cases.
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Reading with interest. Booked car on with main dealer for standard service at £206. They want an additional £156 EACH to do gearbox oil and diff oil at the same time. Promptly cancelled the appointment and will speak to my local guy.
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Total cost for me was 60 on oil for the box, 30 on dif oil, 80 quid to “fit”.
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I bought my own SG1 Mazda diff oil from MX-5 Parts. Goes up so often but it was ~ £37 with postage. I got charged 0.3 hours labour (£37.50) in a Mazda dealership, and of course VAT on that bit too. So £45. So about £82 all in.
The gearbox oil got done as part of the 5th service, in 2023.
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A bit OTT for the price of the oil me thinks, £60 for the 3 litres would sound better.
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I will have to finalise my research and buy whatever is needed for my guy to put in. Blown away by the Mazda workshop price.
You have to allow for anyone making a profit these days for goods supplied but whoever put those prices on oil change are taking the whatsits knowing some may pay it.
I’m waiting for my daughter to spill the beans or more like tell me the final bill for changing the timing chain on her diesel Toyota. The parts alone could be £1500, they’ve had the car 4 weeks, apparently the dealer said they are making the parts. The gold engraving must be taking the time😆
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Oil is cheaper than gearboxes.
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Dealer labour charges, only just so.
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Very much so but £500 for engine oil, gearbox oil and diff oil seems wild. I have ordered up the Mazda diff oil and my mechanic says he has quality 75w80 for the gearbox.
Total cost should be half of what Mazda want.
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