Duratech/620 - Is this the bolt to fill the gearbox oil?

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Phillip Meyer
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I think this is the bolt (circled red) but not sure, it's a 620s. The photo was taken from inside the engine bay, looking to the back of the car. (It's side on this time but thr image above is the right way)

Phillip Meyer
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aerobod
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AFAIK only the sequential fills from the top with a known quantity of oil - you have to drain first, then fill any oil cooler and pipes, then add the correct volume to the top filler.

The Mazda 5-speed box has the filler on the side, should be the plug that has yellowish markings on it in this picture: https://caterhamparts.co.uk/gearboxes/6027-gearbox-5-speed-mazda-caterham-specification.html

Here is a thread on filling the Mazda 5-speed: https://www.caterhamlotus7.club/forum/techtalk/filling-mazda-5-speed-gearbox

James

Phillip Meyer
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Found it! Yes, there is a grommet right at the end of the passenger footwell leading to the filler plug. Thank you!