I thought i would start a discussion regarding engine/gearbox oil additive, given that we have a myriad of threads regarding what oil to/not to/recommended use etc. Understanding this might be quite an opinionated discussion, i ask anyone who wants to respond here to actually have some sort of information or experienced base to discuss it, rather than mentioning what you mechanics sister's dog said is good or not.
It's a pretty big industry, and i've had discussions with a mechanic mate of mine who races cars/karts/bikes who swears by a range of Nulon products that he adds to his oils at all times. His view is they reduce wear, and improve performance (less drag, easier shifts etc).
The reason why i want some opinions and views is
1) Our cars are getting a bit long in the tooth, some of us have over 100k kms on our cars
2) Our cars are quite sensitive to the quality/viscosity/frequency of oil changes
3) Our cars are usually driven in anger, hopefully always in a controlled environment, due to their high revving nature and a need to be on top of things to get them going as fast as they can
My particular interest is in maintaining my gearbox... as i can be quite rough on it, and whilst it is still in perfect condition, the picky bastard in me wants to make sure it absolutely stays that way... i do a gearbox oil change (MTF) every second engine oil change which is usually over 5000kms.
Thoughts?
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