English diff failures - Poor oil???

English diff failures - Poor oil???

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Discussion

rene7

Original Poster:

548 posts

90 months

Sunday 24th June 2018
quotequote all
Anyone else had recent failures of Ford English axle differentials due to worn gear teeth?
I've used english axles for 40 years - never had a Diff problem til recemtly
I used ep 80/90 oil from my local motor factors which clearly hasn't lubed the teeth??
The photo's below are after only 1200 miles in a 550 kg kit car, you can clearly see that the teeth faces are worn out due to lack of lubrication.
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This is the second failure I've had - last year the diff was howling when I took the car off the road for the winter, the car had done 3800 miles last year but diff didin 't fail completely like the one shown in the photo's, but the teeth were worn.
Would the Halfords ep80/90 oil be the correct oil for this application??
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I went specifically looking for a quality oil , I could only get Halfords own branded. Is this OK for English diff.
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Anyone know whether oil specs have changed recently??
TA