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The BMW Range
5 Series
E60, E61
E60 Automatic Transmission Problem
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<blockquote data-quote="ess530i" data-source="post: 298790" data-attributes="member: 13496"><p>hi owen i did have a 6-months engine & gear warranty but its expired. anyway the car is modified so i dont think they will warrant that. thx for the tip though</p><p></p><p>ok i changed to primax from v-power 2 days ago and since then have not face any issue after about 20mins of hard drivin under hot sun...guess i can say that it has improved but i wanna understand the logic behind. some forumers have said that the auto tranny may mis-shift or have problems if the air/fuel ratio is too rich. so then will switching to a lower octane fuel reduce the air/fuel ratio? and why does air/fuel ratio has got anything to do with the auto tranny? or doesn't it?</p></blockquote><p></p>
[QUOTE="ess530i, post: 298790, member: 13496"] hi owen i did have a 6-months engine & gear warranty but its expired. anyway the car is modified so i dont think they will warrant that. thx for the tip though ok i changed to primax from v-power 2 days ago and since then have not face any issue after about 20mins of hard drivin under hot sun...guess i can say that it has improved but i wanna understand the logic behind. some forumers have said that the auto tranny may mis-shift or have problems if the air/fuel ratio is too rich. so then will switching to a lower octane fuel reduce the air/fuel ratio? and why does air/fuel ratio has got anything to do with the auto tranny? or doesn't it? [/QUOTE]
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E60 Automatic Transmission Problem
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