Date:         Tue, 13 Nov 2018 20:46:53 -0800
Reply-To:     Jim Arnott <jrasite@EONI.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Jim Arnott <jrasite@EONI.COM>
Subject:      Re: Correct synthetic oil weight?
Comments: To: Jeff Palmer <w.jeff.palmer@ICLOUD.COM>
In-Reply-To:  <A88B84E8-D43A-45CE-800D-AACE552F8A2B@icloud.com>
Content-Type: text/plain; charset=utf-8

Hi Jeff,  

I use Rotella 5w40 T6 full synthetic.  Yes, it is a diesel oil, and as such it includes a heavier load of zinc (ZDDP) than an oil formulated to modern gas engines. The zinc is, as I understand it, beneficial to our flat tappet motors.  You might spend a bit of time researching.  This is a good starting point: https://www.bobistheoilguy.com/ Then search for articles on ZDDP and classic cars. The T6 Rotella is about 1200 PPM. Mobil 1 auto oil is about 750-900 PPM.

Have fun,

Jim


> On Nov 9, 2018, at 11:52 AM, Jeff Palmer <w.jeff.palmer@ICLOUD.COM> wrote:
> 
> Hi - trying to get one last oil change in before parking the van for the winter. 2.1 litre engine rebuilt about 30k km ago. Normally I use 20W/50 in the summer and I “believe” my mechanic has been using 15W/40 synthetic. I can only find diesel 15W/40 synthetic at my FLAPS. This is not the same, is it? Is this the right weight of oil for me?
> 
> Thanks 
> Jeff in Winnipeg
> 
> Sent from my iPhone