"cranheim" <[email protected]> wrote in message
news
[email protected].prodigy.net...
>I see the new statement from Toyota Customer Service about using synthetic
>oil still states if you switch to synthetic oil, you should not switch
>back. I have tried repeatedly to get Toyota to say why this is recommended
>in their vehicles. I want to use Mobil 1 in my 2004 Sienna because I change
>my own oil most of the time. However, for those times I need an oil change
>and have to go to the dealer, they will most likely only use their
>conventional oil. I sure would like to know what the problem would be if I
>did this. Mobil 1 has long said their oil is compatible with all other
>conventional oils, and you can use both from time to time. Charles Ranheim
The statement from Toyota Customer Service about not switching from
synthetic to conventional oil is not new. It has always been there.
I do not know the reason for the recommendation.
--
Ray O
correct the return address punctuation to reply
news
>I see the new statement from Toyota Customer Service about using synthetic
>oil still states if you switch to synthetic oil, you should not switch
>back. I have tried repeatedly to get Toyota to say why this is recommended
>in their vehicles. I want to use Mobil 1 in my 2004 Sienna because I change
>my own oil most of the time. However, for those times I need an oil change
>and have to go to the dealer, they will most likely only use their
>conventional oil. I sure would like to know what the problem would be if I
>did this. Mobil 1 has long said their oil is compatible with all other
>conventional oils, and you can use both from time to time. Charles Ranheim
The statement from Toyota Customer Service about not switching from
synthetic to conventional oil is not new. It has always been there.
I do not know the reason for the recommendation.
--
Ray O
correct the return address punctuation to reply