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can i switch to the Mobil 1 15,000 mile oil after haveing DINO oil in it for 30k miles? i do not plan on switching back ever im just sick of oil changes every month.... thanks in advance....

~Tector
 

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I use mobil 1 15,000 all the time but i change the filter at 7500 miles and check the oil ofetn and add as needed. I drive 150 miles a day and i feel your pain on oil changes.
 

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Switching to synthetic at 30k is no problem whatsoever.

It's just on really old cars that you have to watch out. Sometimes dino oil will mask a poor seal in that case. Then when the synthetic starts cleaning it out, you've got a leak.
 
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