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Previous Thread Next Thread Print Thread Rate Thread Any preperation needed to switch to Synthetic Oil? #587121 03/31/05 12:19 AM Joined: Jan 2005 Posts: 43 E elnido OP Getting the Wheeling Fever 133,000 miles I'm planning on changing to synthetic oil (first time to my knowledge of this truck) today or tommorrow. I have one can of Seafoam kicking around and was wondering if I should dump some in the crankcase and go for a drive before changing the oil. How many miles (mountain driving) should I drive to give it a chance to work? Do I need to do this? Any precautions other than not using too much? Thanks __________________ '95 T100 3.4L 4X4 Re: Any preperation needed to switch to Synthetic Oil? [Re: elnido] #587122 03/31/05 12:59 AM Anonymous Unregistered I read in Road & Track that switching to synthetic in a high mileage engine can in some cases cause oil leaks. Something about the synthetic cleaning the buildup around old seals off and making them leak. Re: Any preperation needed to switch to Synthetic Oil? #587123 03/31/05 03:20 AM Joined: Mar 2005 Posts: 284 CA, USA ToyotaChris Mudrunner ditto. wait till you rebuild then do it at about 20k on the rebuild. Watch Bruins Hockey God Bless you guys and gals 1985 4Runner Re: Any preperation needed to switch to Synthetic Oil? [Re: ToyotaChris] #587124 03/31/05 02:30 PM Anonymous Unregistered Mobile 1 makes a high mile blend just for that purpose. That's what I use. Moderated by  4x4Wire, Adam F, Dandeman, kewlynx  Hop To Mitsubishi Forums ------  Mitsubishi 4x4 and SUV Tech  Mitsubishi Diesels  Mitsubishi ArchiveToyota Forums ------  Early Toyota Trucks  Toyota 4Runner, FJ Cruiser &...  T100 & Tundra Forum  Tacoma Forum  Toyota Tech ArchiveJeep Forums ------  Jeep Talk  Jeep TechIsuzu Forums ------  Isuzu 4x4 & SUV Talk  Isuzu 4x4 & SUV Tech  Isuzu DieselsKia Forums ------  Kia Talk  Kia Sportage & Sorento TechOff Topic Chat ------  4x4 Gallery  Off-Topic Chat  Recreational Access & Land ...  Politics4xForums ------  Outdoor Gear  General 4x4 Discussion  Tools and Fabrication  General Communications  Amateur Radio  GPS and MapsParts Bin ------  Private Party - Garage Sale  Private Party - Items wanted  Vendors, Hot Deals, Group Buys4x4Wire Back Yard ------  Suzuki Forum  AZ Crawler Crew  Cal-Nev Crew  General Ford 4x4 & SUV Forum  General Dodge 4x4 & SUV Forum  General Chevy 4x4 & SUV ForumFeedback & Testing ------  Problems, Questions, Suggestions4x4Wire Staff ------  Forum Moderators  Problem Threads Print Thread Switch to Threaded Mode 5 Excellent 4 Good 3 Average 2 Bad 1 Terrible View Profile Private Message Follow User Forum Posts View Profile Private Message Follow User Forum Posts

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