I don't think there is any need for that. Just drain the oil and replace
with heavier.

Jim

On Fri, Aug 14, 2015 at 12:07 PM Tyler Hardison <tyler@seraph-net.net>
wrote:

> So last night when we pulled into Walla Walla, we noticed the engine was
> noticeably louder. Like the noise when the valves have temporarily lost
> hydraulic pressure.
>
> There was no noticeable power loss, just noisy and disconcerting.
>
> Does anyone have recommendations for a friendly Vanagon shop in Walla
> Walla? I think it might be time to have an engine flush with ATF or Sea
> Foam. But I want the help of someone who knows the engine.
>