MG4 Reduction Gearbox Oil Leak

[nexia201]

Interesting.

Yet an EV Taxi is likely in Ready Mode for those thousands of hours. Yes, no mechanical parts are wearing, so the "idle penalty" can be much less, but not zero. The HV battery contactors are on, motor controller is running with high voltage present (but not driving the motor), maybe air conditioning or the heater is on, the DC-DC is running, though only running entertainment and lights, perhaps a few pumps and fans, and so on. Maybe the warranty can be reduced from 100k mi to perhaps 80k mi instead of 60k mi. But maybe for ICE Taxis the penalty is worse than 6/10, I would not know.

I really wonder if they did any actuarial calculations. I imagine that the figures would be fairly well known by now for ICE Taxis.

Yes but things just being in the on position is not creating any wear, so it's stupid to apply the same rules for ICE and EV cars.

 

[Tuareg]

Yes but things just being in rhe on position is not creating any wear , so uts stupid to apply same rules for ice and ev cars

Not quite correct. Powered on circuits generate some heat which istelf creates wear on contact surfaces, plastic insulation surfaces, solenoids etc.

 

[nexia201]

Not quite correct. Powered on circuits generate some heat which istelf creates wear on contact surfaces, plastic insulation surfaces, solenoids etc.

Yes but it's minimal compared to a running ICE.

 

[Tuareg]

Yes but it's minimal compared to a running ICE.

Not necessarily, you're comparing two different tecnologies. Electrical circuitry has a finite life when used and a finite number if 'cycles'. One things ICE taxis do which is totally unnecessary is leave their engines idling for no reason, outside coffee kiosks, while waiting for customers to come out of properties, outside airports etc. Thousands of hours running for no reason. Why don't they simply switch their engines off? Often they don't even have the driver onboard, so the excuse for 'a/c' doesn't fly.

 

[nexia201]

Not necessarily, you're comparing two different tecnologies. Electrical circuitry has a finite life when used and a finite number if 'cycles'. One things ICE taxis do which is totally unnecessary is leave their engines idling for no reason, outside coffee kiosks, while waiting for customers to come out of properties, outside airports etc. Thousands of hours running for no reason. Why don't they simply switch their engines off? Often they don't even have the driver onboard, so the excuse for 'a/c' doesn't fly.

No, where I live they are left on for AC purposes or else they switch them off, but here being hot, car is switched on morning and then switched off end of shift. I am comparing ICE motor with EV motor, if you see hours on both and what servicing they need you cannot compare.

 

[AndyL61]

As I had planned I changed my transmission oil at 21k miles (planned to at 20k). Reasons were because most wear occurs during the initial "breaking in" period and I consider 60k miles far too long for a first oil change. Other reason was that there was much debate about reduced amount of oil due to the leaking problems via the original breather so I wanted to see how much oil was in my transmission. Anyway I did the change and I believe 750ml was put into my car when the breather was replaced. I have put the correct amount back in (850ml for a refill) and now at 25k and all is well. There was an amount of metal filings on the magnetic drain plug as I would expect due to initial wearing in of the gears. So I now feel more confident that a) I have the right amount of oil in the transmission and b) The oil has been replaced at a sensible period from new and new drain and filler plugs replaced.

 

[nexia201]

As I had planned I changed my transmission oil at 21k miles (planned to at 20k). Reasons were because most wear occurs during the initial "breaking in" period and I consider 60k miles far too long for a first oil change. Other reason was that there was much debate about reduced amount of oil due to the leaking problems via the original breather so I wanted to see how much oil was in my transmission. Anyway I did the change and I believe 750ml was put into my car when the breather was replaced. I have put the correct amount back in (850ml for a refill) and now at 25k and all is well. There was an amount of metal filings on the magnetic drain plug as I would expect due to initial wearing in of the gears. So I now feel more confident that a) I have the right amount of oil in the transmission and b) The oil has been replaced at a sensible period from new and new drain and filler plugs replaced.

I will be doing my second one my self in the coming weeks , first one at 64k kms and now 2nd one at 115,000 kms as warranty is finished on it now .