shenKing Posted September 19, 2004 Report Share Posted September 19, 2004 I had changed to Mobil synthetic ATF and last week the ATF cooler line busted and lost quite a bit of ATF. I took the car to the dealer and got the cooler line fixed and they filled it with regular ATF as they couldn't get synthetic ATF. Just wondering if anyone has information on mixing synthetic ATF with regular ATF. Is this going to cause problem? Thanks Link to comment Share on other sites More sharing options...
JasonA Posted September 19, 2004 Report Share Posted September 19, 2004 I don't think so. You can never get the old fluid out when you first "switch" to synthetic ATF anyway. I think all synthetic ATFs are compatible with conventional ones. Jason(2001 STS, White Diamond) "When you turn your car on...does it return the favor?" Link to comment Share on other sites More sharing options...
jschunke Posted September 19, 2004 Report Share Posted September 19, 2004 Not a problem. The label on the Mobile 1 ATF container indicates it's compatible with conventional ATF. Link to comment Share on other sites More sharing options...
Marika Posted September 19, 2004 Report Share Posted September 19, 2004 They can mix. It's not a problem. If you really want to make people safe drivers again then simply remove all the safety features from cars. No more seat belts, ABS brakes, traction control, air bags or stability control. No more anything. You'll see how quickly people will slow down and once again learn to drive like "normal" humans. Link to comment Share on other sites More sharing options...
shenKing Posted September 20, 2004 Author Report Share Posted September 20, 2004 Thanks for all the responses. I feel much better now. I guess next ATF change I will go back to synthetic. One furtther question re: ATF; According to the shop manual for the 92 Seville, the frequency for ATF change is 100,000 miles for normal driving but if the car is used in severe conditions, such as in hilly or mountainous terrain, it drops down to 15,000 miles. Is this really true? That's a huge difference. Link to comment Share on other sites More sharing options...
Marika Posted September 20, 2004 Report Share Posted September 20, 2004 Thanks for all the responses. I feel much better now. I guess next ATF change I will go back to synthetic. One furtther question re: ATF; According to the shop manual for the 92 Seville, the frequency for ATF change is 100,000 miles for normal driving but if the car is used in severe conditions, such as in hilly or mountainous terrain, it drops down to 15,000 miles. Is this really true? That's a huge difference. I would go by what the manual says unless there's been an addendum released by Cadillac which states otherwise. If you really want to make people safe drivers again then simply remove all the safety features from cars. No more seat belts, ABS brakes, traction control, air bags or stability control. No more anything. You'll see how quickly people will slow down and once again learn to drive like "normal" humans. Link to comment Share on other sites More sharing options...
shenKing Posted September 20, 2004 Author Report Share Posted September 20, 2004 I read somewhere that synthetic fluid is less prone to being burnt due to overheating. Does this mean it can last longer and so can extend the fluid change interval? If you drive in the mountains, what's your average mileage before each ATF fluid change? Thanks. Link to comment Share on other sites More sharing options...
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