I just purchased my first benz last week. A 1985 300D 5cyl turbo diesel. What is the redline on this engine? The only way I can get up to speed on the metered on ramps in milwaukee is to manually shift it and I really dont know how high this engine is supposed to rev. I bought the car on E-bay for $1800. The interior is very clean, even the driver seat is good. The power antenna even works. The car frequently blows the fuse that works the radio, interior lights, antenna and hazzard lights. Is this common? Anything I should look at? Maintanance wise I changed the oil, filter, both fuel filters and air filter. Anything else I should do right away? I converted the air to 134A and after about 10 minutes of being on i here a scraping noise under the hood, it still blows cold, any ideas? Taking to a dealer is not an option for me $$$. I buy older rear wheel drive cars i can work on.
Thanks for any help,
Ken

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1959 Gravely LI, 1963 Gravely L8, 1973 Gravely C12
1982 380SL
1978 450 SEL 6.9 euro restoration at 63% and climbing
1987 300 D
2005 CDI European Delivery
2006 CDI Handed down to daughter
2007 GL CDI. Wifes