8v92 oil???

[Singing Land Cruiser]

Hi all, Will castro tection extra 15-40 work in a 8v92ta vs a str 40w? thanks M&C

[luvrbus]

nope   

good luck

[robertglines1]

not worth the chance..go with mfg requirements....must be rated for 2 stroke...

[DaveG]

Maybe we need to start a sticky for oil?

[Jerry32]

would you go against the manual and the info on this board?

[bevans6]

I wondered why there wasn't a sticky for oil.

Brian.

[PP]

I prefer 30 wt, and that's all my engine's ever had in it since new, but most people are down south and prefer 40 wt from the sounds of it. At any rate, USE CF-2 straight wt oil! This subject comes up a lot here. Good Luck, Will

[Dreamscape]

Shouldn't need a sticky, it's in the manual. "Da Book"

http://www.tejascoach.com/ddcoil.html

[DaveG]

Now it is perfectly clear...thanks for the link (and quick too).

[Singing Land Cruiser]

Thank you one and all. M&C

[luvrbus]

DaveG, don't put a lot of stock in Charlies web site (tejas) he hasn't updated it in years.
I along with a lot of others have always disagreed with him on the 15/40 oil causing that type damage to the engine he shows.
FWIW that was cause by heat and the piston pin seals not installed in the correct manner and tested.
2 former members here on the board brought it to my attention   



good luck

[Dreamscape]

You always have to research any sources. I posted that to get them some initial information. It's all about the oil!

I know, cause ours has a few wet spots. If it aint bleeding, check the dip stick!

One of these days I'll be in a position to work on the few leaks I do have.

Paul

[Nellie Wilson]

In a word, no.

Nellie

[HighTechRedneck]

Regardless of the Tejas site, Detroit Diesel is very specific to only use straight weight oil in the two stroke engines.   Also several that tried multi weight oil reported substantially higher oil consumption.

From Detroit Diesel Lubricating Oil Requirements document:

3. For continuous high temperature operation (over 200 F or 93 C coolant out), the use
of an SAE grade 50 lubricant in DDC two-stroke cycle Series 53, 71 and 92 engines is
required. SAE grade 50 lubricants are also required for all Series 149 engines where
ambient temperatures are above 95 F (35 C).

4. At ambient temperatures below freezing (32 F or 0 C), sufficient starter cranking speed
may not be achieved to start the engine with SAE 40 grade oils. Where starting aids are
not available or at very cold temperatures (0 F to -25 F or -18 C to -32 C) even if
starting aids are available, the use of multigrade SAE 15W-40 or monograde lubricant
SAE 30 will improve startability. These lubricants must possess a High Temperature
– High Shear Rate Viscosity (measured by ASTM D 4741 or equivalent) of 3.70 cP
minimum. These oils must be replaced with monograde SAE 40 lubricants as soon as
ambient conditions permit. Do not use multigrade or SAE 30 grade lubricants in
two-stroke cycle marine engines or Series 149 under any circumstances.

And

3.7 SYNTHETIC OILS
Synthetic oils may be used in Detroit Diesel engines, provided they are API licensed and meet
the performance and chemical requirements outlined in this publication. For two-stroke cycle
engines, only synthetic oils which do not contain viscosity improver additives may be used.

[luvrbus]

The great oil debate goes on, Mike there are 4 pages on oil in the book I'll ask this question one more time how many change over to 50w when temps are 100 degrees if your going by the book read all 4 pages.
They will use a little more oil with 15/40 but 15/40 will not do damage on one like on the Tejas site.
I have seen 6v92's run for 300,000+ miles on 15/40 I don't use 15/40 but I do change to 50w in the summer and 40w in the winter here in AZ 


good luck