M201 - Anti-freeze / Anti-gel markings
The M201 above was sold at auction with a very low mileage on the clock having never been rebuilt. It had been held in reserve for probably its entire life. The markings stencilled onto the windscreen clearly indicate that this M201 was suitable for very cold climate use. The information can be decoded as follows: AG - antigel (antifreeze) XS 791- product code (protection to -35C) Permanent - (the protection is permanent). Thanks to JLM for decoding this for me. Another product was also used by the army XS 691 offering protection to -25C
