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Old 02-09-2002, 10:39 PM
Car Killer
Join Date: Jan 2002
Location: Northern VA
Posts: 178
ATF... Synthetic, or not.

My car is an 83 300D with 220,000 miles and running like new. It has had regular transmission fluid changes, probably with whatever was cheapest. I intend on keeping it until the cows come home, and want to know what is the best ATF. Is it worth the slight expense to go synthetic or is regular stuff fine? Will their be any problems going to synthetic (keep in mind its had regular changes and stood up to the new fluid with no problems)

If synthetic is the best choice, give me your opinions on Mobil1, redline, and amsoil. Thanks. The engine currently has Mobil Delvac-1 5w-40 synthetic diesel oil and the rear end has valvoline synthetic 80w-90.
2003 Jetta Wagon TDI 145,000MI
1999.5 Jetta TDI 287,000MI
2001 Suzuki SV650S 26,000MI
2008 Yamaha Vino 125 11,000MI
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Old 02-10-2002, 09:49 AM
Registered User
Join Date: Jun 2001
Location: Omaha, NE
Posts: 962
I switched to Mobil 1 synthetic ATF at 90,000 miles, mostly because my car sits outside during our usually very cold winters, and synthetic tends not to thicken as much in really cold weather.

I'm not sure you'll get much bang for the buck, unless your car is exposed to cold. You've obviously done a great job maintaining this vehicle to have 220 k on the transmission!
'93 400E
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Old 02-11-2002, 01:31 AM
Posts: n/a
What is Seafoam additive?
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Old 02-11-2002, 01:52 PM
kowached's Avatar
Rising Member
Join Date: Sep 2001
Location: Michigan
Posts: 74
Go with the Redline or Amsoil

Redline & Amsoil both make 100% synthetic fluids, and if you're going to switch to synthetic why not use the best.

Lots of stuff that I didn't know about oil:
Pickup Truck Records One Million Miles on PennzoilŪ Motor Oil

More if you want:
oil additives

1998 BMW 540i Sport
1995 E320
1992 400E
1989 BMW M3
1979 Triumph TR7 (1st car)
1986 BMW 735i (Sold)
1980 BMW 320i (Sold)
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