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Transmission Oil

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Darth Vader
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Hello All, I'm going to change out my Transmission and Rear End oils after about two years of running it since I restored the car. I'm curious what other people are using in their Healey transmissions? Thanks.
 
Transmission: 30 weight non-detergent. Rear End - 90 wt gear oil.
 
Just my opinion but 2 years on deferential and gear box oil is nothing. Stuff last forever or leaks out. No extreme heat or carbon. Replacing the rear end oil is a bitch of a job. I use MT90 from Red Line in the gear box. Differential needs Haploid oil 85-90 wt.
 
Yes I usually expect the trans and diff oil to last forever but during restoration I put in a new 3:54 ring and pinion and I also had detergent oil in the trans for about a year. I want to inspect both oils to make sure they are ok.
 
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