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Castrol gtx high mileage oil

Old 02-28-2011, 08:03 AM
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Hello All,
I recently reached a 100k with my 2004 5er, and was thinking of starting using "castrol gtx high mileage" oil. I heard that it helps to protect a little better than your normal oil. But I have two questions. 1.) Is this brand still a syntheic oil and 2.) In the past I've only used the normal castrol syntheic oil, would the change of oil be harmful.
Please chime in with your thoughts and suggestions.
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Old 02-28-2011, 08:10 AM
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Originally Posted by mos12osut View Post
Hello All,
I recently reached a 100k with my 2004 5er, and was thinking of starting using "castrol gtx high mileage" oil. I heard that it helps to protect a little better than your normal oil. But I have two questions. 1.) Is this brand still a syntheic oil and 2.) In the past I've only used the normal castrol syntheic oil, would the change of oil be harmful.
Please chime in with your thoughts and suggestions.
If the Castrol synthetic has served you well - I'd stick with it. I believe that high mileage oil is a conventional. IMHO, 100K on a modern engine is not all that "high mileage" [
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Old 02-28-2011, 01:45 PM
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stick with the red labeled castrol sunthetic 0w30.

PS you posted in the F10 forum (but you are talking about a e60...)
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Old 03-01-2011, 10:23 AM
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Thanks guys.
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