is it ok to put those "high milage" additives in diesel engines?

__________________
06 VW Jetta TDI

as many will tell u, dont bother!
if ur going to anything good for ur engine just add a a diesel fuel stabilizer like power service, this will help lubricate ur fuel, wich in turn lubricates ur injection pump, it will also keep ur injectors clean

__________________
82' 300SD

Voodoo in a can. I doubt all of those claims. Most of them claim they fill scratches and grooves in worn engines. Some grooves are required (lifters and such). Other claims include viscosity and lubricity enhancement, cooler temps and stops leaks. Correct maintenence takes care of those issues before they happen.

Worn engines are just that.

Make sure to sacrifice a few chickens before you do it!

__________________
1999 SL500
1969 280SE
2023 Ram 1500
2007 Tiara 3200

As long as you're purchasing clean fuel from a high traffic fuel source, you don't need fuel stabilizers either.

__________________
'81 MB 300SD, '82 MB 300D Turbo (sold/RIP), '04 Lincoln Town Car Ultimate

Sooner or later every car falls apart, ours does it later!
-German Narrator in a MB Promotion Film about the then brand new W123.

I wouldn't do it on a turbo, beacuse of the jets that spay oil on the botton of the piston.

I once added a can of Sea Foam to a near 400k mile 1984 300CD, it almost ran away.

Do not use any oil additives.

I once had a knocking sound and added some Lucas oil additive and it went away. Is that a coincidence or did it really help. It is a thick oil lubricant. Are you advising not to use something like it again. Ray M

Additional additives can have a negative affect on the oil's own included additive package.

http://www.bobistheoilguy.com/images/lucas/lucas.htm

If you want the oil to be thicker, run a heavier weight oil.

the only engine oil additive ive had success with it Rislone. I had a very loud and annoying lifter tick and was already running ELF 5w40 synthetic oil. So at the next oil change i used mobil 1 5w40, now most say it takes a good amount of miles to clear up the lifter tick with synthetic oil. So i poured in some rislone and in a matter of minutes the lifter tick disapeared!

Now i have amsoil 15w40 with no additives and the lifter ticks havent returned since.

__________________
Current:
05 E320 CDI
07 GL320 CDI
08 Sprinter
05 Dodge Cummins
01 Dodge Cummins

Previous
2004 E55 AMG
2002 C32 AMG (#2)
1995 E300
1978 300D
1987 300D
2002 C32 AMG(blown motor :[
1981 300SD
1983 300SD
1987 300SDL
2002 Jetta TDI
1996 S420
1995 S500
1993 190E 2.6
1992 190E 2.3
1985 190E 2.3 5-Speed

When Restore was a new product, a 292 cu.in. ford Y-block with many miles as a test pig. Record compression. Change oil and add Restore as per directions--netted an increase in compression on all cylinders but what was most noticible was that the really low pressure cylinders were pulled back up to almost normal compression. Now IF diesel engines react the same as gassers, and IF the Restore product is still the same, THEN the above results may be valid for our beloved Mercedes diesels. An increase in compression in our diesel engines can't really be a bad thing

Regards

RUN-EM
1983 300SD--aka--SPARKY THE DIESEL

I find it hard to believe that an additive, can increase the compression on a Diesel motor... on a gasser the compression was probably down around 60 psi and it bumped it up to what, 80, 85? below 270psi it is nearly impossible to start a Diesel... what additive can help at those pressures reliably? most Diesels lose compression due to valve wear, or ring slop, not grooves in the soft pistons, or cylinders. I think the best that can be done with out overhaul is fresh clean oil... and frequent oil changes.
John

__________________
John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!

This write-up actually confuses me, I always thought that synthetic oil is a superior oil compared to dino. This week I am going to be adding new gear oil and already purchased Mobile 1 75w-90. Would 75w-90 full synthetic gear oil act the same way as the 80w-140 full synthetic? I don't like the idea of it not climbing at low speeds.

Per the write-up and pictures it seems that 80w-90 synthetic blend is the best way to go.

__________________
1983 123.133 California
- GreaseCar Veg System

This bob guy has some great energy and apparently good intentions, but his methods don't IMO duplicate real-world application of the product.

It would be nice to have good independent testing, but whether oil foams or climbs small fine-tooth gears at hight speeds on an electric-motor drive has little to do with large ring and pinion gears, with how well it is actually lubricating or dissipating shock and heat. Ditto for the air-filter test where he compares colors of a small piece of filter media on a stovetop.

Thanks for the effort Bob, but I'd really like to see proper testing for my decisions.

As far as products that will raise the compression, it is possible. It is also possible that the buildup of these same products will go further than raising compression, to building up in the ring groove and making rings stick, greatly increasing engine wear. Such is the case for products including Teflon / PTFE in my opinion, as it can't sustain the heat of combustion, and can create ring fouling/sticking.

There are additives that I will use, but they are typically more of the same thing that premium oils already have. If you're not very familiar with the chemicals in the additive product, the effects of those chemicals in a diesel engine, and the result of the breakdown of those chemicals I'd stick to just using premium diesel oils.

__________________

Gone to the dark side

- Jeff

I don't know If I'd use it (Restore) in a diesel, but I know that the stuff brings oil consumption on our old Ford 4000 tractor (almost 6000 hours... ) down considerably..... That old tractor can go through a quart of 10w30 in about 3 hours of hard work....... Restore brings it down below a cup...... Until the Restore gets burned up, the oil consumption starts crawling back up again......

So, YES, it DOES work in gasoline engines.............

__________________
-Matt

EPA Section 609 Certified MVAC Technician
-----------------
Oil Burner Kartel Member #10

Ahh the smell of Diesel Fuel, it's like coffee in the morning!

My Car:

1982 300SD Turbo Diesel (231,500 miles!) RIP

1984 300SD Turbo Diesel Custom (235,500 mi on driveline.) - On Road!!

www.icsrepair.com