Home Slickdeals Peak Blue DEF 2.5 Gal Diesel Exhaust Fluid at Ace Hardware $8.99... Slickdeals Peak Blue DEF 2.5 Gal Diesel Exhaust Fluid at Ace Hardware $8.99 w/ Free In-Store Pickup By ARCOM - 11 February 2019 130 0 SHARE Facebook Twitter Go to the deal page: Peak Blue DEF 2.5 Gal Diesel Exhaust Fluid at Ace Hardware $8.99 w/ Free In-Store Pickup