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#1
10-31-2009, 12:56 PM
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API CF, Is It Enough For An Older Mercedes?
I’m new to diesels. My 93 MB 602 engine requires a CF rated oil. I have been using CJ rated products just because I thought that’s what I needed.
I find a whole new range of products to choose from when I look for the CF rating only. My question is this, will a CF rated oil be just as protective, lubricate just as well, and provide as long an engine life as the CJ’s I have been using? Thanks.
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1993 W124 300D 2.5L Turbo, OM602.962 2000 Chevrolet Cavalier, 2.4L DOHC 2002 Ford Explorer, 4.0L SOHC 2005 Toyota Prius, 1.5L http://www.fuelly.com/sig-us/40601.png 
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#2
10-31-2009, 02:58 PM
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CF is better than CJ. CJ lacks many anti-war additives because they damage modern NOx cats.
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#3
10-31-2009, 03:48 PM
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Not true, just because zddp is lowered doesn't mean that aw, ep, and fm adds arent there as other chemistries.
Older engine designs don't burn as cleanly, and modern diesel-spec oils have better detergency and dispercancy. Unless the engines use flat tappet cams, there is no compelling need for huge amounts of zddp, particularly considering how well current oils control wear and perform.
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Current Diesels: 1981 240D (73K) 1982 300CD (169k) 1985 190D (169k) 1991 350SD (113k) 1991 350SD (206k) 1991 300D (228k) 1993 300SD (291k) 1993 300D 2.5T (338k) 1996 Dodge Ram CTD (442k) 1996 Dodge Ram CTD (265k) Past Diesels: 1983 300D (228K) 1985 300D (233K)
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