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Re: [GMCnet] Blackstone Labs and ZDDP oils [message #109427 is a reply to message #109422] Wed, 22 December 2010 11:46 Go to previous messageGo to previous message
James Hupy is currently offline  James Hupy   United States
Messages: 6806
Registered: May 2010
Karma:
Senior Member
Perhaps it is a result of the additional thermal load placed on the oil at
higher speeds and loads. The result will likely be further thinning of
lubricants and a faster pour rate which would affect how well the oil stays
put on the dipstick. Many dipsticks have a crosshatch pattern similar to a
double cut file for that reason also. Someone mentioned here that they media
blasted the end of the dipstick. That would probably have the same effect as
the crosshatch. In my old VW double cab transporter the dipstick would get
so hot that it would burn your hand and it was impossible to get an accurate
reading when it was that hot. That was a straight in dipstick and was very
short, not being drawn out through a long tube with multiple bends in it
like the GMC. In any event, morning walkarounds before taking to the road
should include opening the hatch cover to check for critter nests under
construction on top of the exhaust crossover under the air cleaner, fuel
leaks or oil leaks, fan belt tension & condition, coolant level, AT fluid
level, tire pressures, lights, turn signals, tow hitch & tow bars, leaks in
grey & black tanks, as well as engine oil level when cold. This whole
process shouldn't take more than 10 minutes or so. These things are 35 years
old and need frequent attention to insure reliable operation. An ounce of
prevention is worth a pound of cure, someone once told me.
Jim Hupy
Salem, Or
78 Royale 403

On Wed, Dec 22, 2010 at 9:19 AM, Larry <slawrence111@yahoo.com> wrote:

>
>
> you are aware that it takes some time for all the oil to run back to the
> pan so when you stop for gas your oil will always read low for about 20
> minutes.
>
> Fred V
>
>
>
> I have oil consumption issues with Double Trouble that appear to be speed
> related. I use Shell Rotella T 15-40W and if I drove 55 - 60 the
> consumption
> was nil. If I raised the speed up to 70 the oil consumption went up
> significantly. I don't have any specific figures as all I'd do is fill it
> up
> to the dipstick line and no I haven't calibrated the dip stick.
>
> Robert Mueller
>
> /////////////////////////////////////////
>
> I am curious to the result of changing the oil dipstix change since Rob
> states the oil level seems normal when he travels at 55-60 mph and changes
> when he drives over that amount.
>
> The oils are distributed at the 55-60 mph speed and if it were a drain back
> issue, it would seem he would see it when he checked it then as well.
>
> This of course is if he is checking oil level every time at the same time
> when pulled into the station for refill.
>
> Hopefully, checking the level a bit later will see less oil use, that is
> the easy fix, I think.
>
> Just thinking it curious that only 5mph more can make that much of a
> difference.
>
> Could the rings be disrupted that much with that little change in
> motion/force?????
>
> Could a vibration due to friction cause this and might an additive correct
> the friction?
>
> Just my thoughts
>
>
> --
> Gatsbys' CRUISER :d
> 74 GLACIER X, 260
> 455/APC/4 bagg'r(ver3)
> Remflex Manifold gaskets
> _______________________________________________
> Purchased 08-18-04
>
> _
>
>
>
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