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The BMW Range
3 Series
E90, E91, E92, E93
Oil contamination in Radiator expansion tank
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<blockquote data-quote="zam zainal" data-source="post: 414856" data-attributes="member: 19827"><p>Bro,</p><p></p><p>I think you faced the same problem which i had last month with my bro;s E46 328, the problem seems to be from the leak oil seal ( RM 80!) in the trans cooler heat sink which supposed to cool down the GB temperature.</p><p></p><p>The headache started when i sent the car to flush the coolant , then i saw the milky thick kinda creamy inside the expansion tank and on the cover.</p><p></p><p>Checking the error code, none display,..checking the GB oil and the engine oil..all clean! I was lucky when forumers here especially Jarance and one anonymous forumer from Kuantan willingly helping me with a good advise and recomended me a good GB specialist in Batu Caves, Gombak.</p><p></p><p>Please bring it to your w/shop or GB specialist to check it immediately.</p><p></p><p>They'll charge only RM 300 just to open up and check your GB (part by part) , and its good to let them do it.</p><p></p><p>The problem when the cooler oil seal leaks is when the water gets in your GB, even just a nano scale, </p><p></p><p>1:: its create problem to your solenoid where all the transmission electrical signal were sent to the ECU. </p><p></p><p>2:: The clutch plate worn , due to clutch plate (kapchai size likes!!!) damages from water contanimation</p><p></p><p>Dont worry to much since its just a minor and expected bills for this RM 3500-RM 4500 only ( solenoid aka valve body & clutch plate damage-if any).</p><p></p><p>As for me once i did the so call "overhauling" i put the existing cooler hose to an oil cooler from E36, sandwiched between the radiator. Now the GB temparature reading is +- 100c even during the hot season! <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></p><p></p><p>Strangely though , BMW in german is still insisted on this type of cooling method even they knew our weather is unprecedently hot. </p><p></p><p>PM me or Jarance if you want the w/shop numbers and address.</p><p></p><p><em>note: pls see att pix</em></p></blockquote><p></p>
[QUOTE="zam zainal, post: 414856, member: 19827"] Bro, I think you faced the same problem which i had last month with my bro;s E46 328, the problem seems to be from the leak oil seal ( RM 80!) in the trans cooler heat sink which supposed to cool down the GB temperature. The headache started when i sent the car to flush the coolant , then i saw the milky thick kinda creamy inside the expansion tank and on the cover. Checking the error code, none display,..checking the GB oil and the engine oil..all clean! I was lucky when forumers here especially Jarance and one anonymous forumer from Kuantan willingly helping me with a good advise and recomended me a good GB specialist in Batu Caves, Gombak. Please bring it to your w/shop or GB specialist to check it immediately. They'll charge only RM 300 just to open up and check your GB (part by part) , and its good to let them do it. The problem when the cooler oil seal leaks is when the water gets in your GB, even just a nano scale, 1:: its create problem to your solenoid where all the transmission electrical signal were sent to the ECU. 2:: The clutch plate worn , due to clutch plate (kapchai size likes!!!) damages from water contanimation Dont worry to much since its just a minor and expected bills for this RM 3500-RM 4500 only ( solenoid aka valve body & clutch plate damage-if any). As for me once i did the so call "overhauling" i put the existing cooler hose to an oil cooler from E36, sandwiched between the radiator. Now the GB temparature reading is +- 100c even during the hot season! :) Strangely though , BMW in german is still insisted on this type of cooling method even they knew our weather is unprecedently hot. PM me or Jarance if you want the w/shop numbers and address. [I]note: pls see att pix[/I] [/QUOTE]
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E90, E91, E92, E93
Oil contamination in Radiator expansion tank
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