I see a lot of folks add a RedLine additive to their fuel. After going to their site I see they have 2 offered (besides the anti-wax additive), "RedLine Fuel Catalyst" and "RedLine 85 Plus".
Which is recommended for normal use/maint on a high miles 240D? Thanks.

Either one works fine. I think the 85+ has a cetane increasing additive along with the cleaning additives.

I use RedLine on all the diesels -- seems to help with cold knock on the 220 (real cure is an engine overhaul!), and reduces smoke on the others.

Peter

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1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!

I recently got friendly with the local Red Line distributor and he now sells me their stuff wholesale by the case. I have used the syn ATF, 85+ and syn oil for diesels with good success. Great stuff, just expensive, even at wholesale.

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LRG
1987 300D Turbo 175K
2006 Toyota Prius, efficent but no soul
1985 300 TDT(130K miles of trouble free motoring)now sold