Dave, 

One thing about the manual instructions …. If you have a manual trans…. Says no oil change interval for the trans …

And that’s silly 

We are driving vintage vans now, all previous instructions are maybe due for re appraisal 

Alistair 

> On Jul 22, 2022, at 3:59 PM, David McNeely <davmcneely40@gmail.com> wrote:
> 
> I have tried to follow the oil recommendations listed in my owner's
> manual.  For a while, when I first got the van and was learning, and there
> were oil sender and contact point problems in the electrical components, so
> I thought there was low oil pressure, someone told me to use a heavier
> weight oil, so I did.  But I got things figured out with help from folks on
> this list and an excellent mechanic, and have stuck with the
> recommendations in the book since.  That means 20W50 for the places I've
> run most of the time, but 10W40 here in the Inland NW in winter.
> 
>> On Fri, Jul 22, 2022 at 2:52 PM Jim. Felder <jim.felder@gmail.com> wrote:
>> 
>> When I had a 1990 Carat the local VW shop--a very good one--said I should
>> never use synthetic oil in a waterboxer engine as it was not made with
>> tolerances that matched synthetics in molecular size. Can't vouch for the
>> fact, but I never used synthetic in the engine and the cylinders still had
>> the original hatching and burnt no oil after 250K miles.
>> 
>> Jim
>> 
>> On Fri, Jul 22, 2022 at 9:51 AM Eric Caron <ericcaron96@comcast.net>
>> wrote:
>> 
>>> Good to know.
>>> 
>>>        I think I’ll weight on trying the 60 weight oil until engine oil
>>> pressure or age indicate it.
>>> 
>>>        I’ll stick with mobil 1 synthetic 15w 50 for now but I’m glad to
>>> hear the 40 weight serves folks well as I wonder how easy my current oil
>>> will be to get in the future.  Down south I struggled to find more then
>> 30
>>> weight in Walmarts as we traveled.
>>> 
>>> Eric Caron
>>> 
>>> 
>>> 
>>>> On Jul 22, 2022, at 1:41 AM, OlRivrRat <OlRivrRat@comcast.net> wrote:
>>>> 
>>>>              EC
>>>> 
>>>>      I have never ever used anything heavier that 10w40 in My or
>>> Friends H2O Boxers
>>>> 
>>>> & if a OilChange comes due in Fall I’ll go with 0w40,,, Been doing that
>>> since My very 1st
>>>> 
>>>> H2OBoxr in 83.5 ~ Also, Nothing but Full Synthetic once an Eng is done
>>> with BreakIn ~
>>>> 
>>>> 
>>>> 
>>>>> On 21 Jul , 2022, at 7:57 AM, Eric Caron <ericcaron96@COMCAST.NET>
>>> wrote:
>>>>> 
>>>>> Hi guys,
>>>>> 
>>>>>      I’ve been using mobil 1 15W 50.
>>>>> 
>>>>> It was very hard to find down south but locally still at Walmart and
>>> the price was low when I last got it.  I hope it is still there when I go
>>> back.
>>>>> 
>>>>> I noticed the info here is for 40 weight.    And still a water boxer..
>>> Don’t most use 50 weight or some even 60 weight?
>>>>> 
>>>>> Eric Caron
>>>>> 
>>>>> 
>>>>> 
>>>>>> On Jul 21, 2022, at 8:44 AM, Tom C <thomas.casal@GMAIL.COM> wrote:
>>>>>> 
>>>>>> It’s actually only a gallon so it’s not super cheap but cheaper and
>>>>>> obtainable locally.
>>>>>> 
>>>>>> On Thu, Jul 21, 2022 at 8:40 AM Tom C <thomas.casal@gmail.com>
>> wrote:
>>>>>> 
>>>>>>> Hey guys,
>>>>>>> 
>>>>>>> Mobile 1 15w-40 is getting hard to find locally. What do you guys
>>> think of
>>>>>>> the diesel oils like this the shell rotella stuff like this
>>>>>>> 
>>>>>>> 
>>> 
>> https://www.autozone.com/motor-oil-and-transmission-fluid/engine-oil/p/shell-rotella-t6-diesel-engine-oil-hd-full-synthetic-15w-40-1-gal/354130_0_0
>>>>>>> 
>>>>>>> 32.99 for 5 quarts is way cheaper than the 9.99 a quart for the
>>> mobile 1.
>>>>>>> I don’t mind paying the extra but if this diesel oil is just as good
>>> may as
>>>>>>> well save a few bucks. Thanks for any comments. Peace tom
>>>>>>> 
>>>> 
>>> 
>>