How much does a firestorm take. Not knowing when it was last changed I've drained it and fitted a new filter. The site glass is useless while its on the stand so I'll measure it out.
Thanks for that and......geezzz nearly 4 litres. Glad I buy Rockoil in 25 ltr drums now! Its nearly drained so I'll be refilling in a mo. All I need now is for this damn rain to stop.
