Excellent and helpful info - thank you! I had no idea it was that many gallons or used for other than regeneration.

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Chris

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'10 X5 35D - Performance mods & Kassel tune // '04 Mini R53 - lots of mods, rebuilt // '03 Mini R53 - sold
'05 X5 3.0i - Recently acquired for wife & daughter
'03 X5 3.0i - lots of upgrades, passed to son // '98 540i - other son's
'94 E36 318ic - son's wrecked // '96 E36 328ic - son's sold