Just finishing a trike using ea 82 fuel injected with auto trans. Thinking of going to synthetic oil in engine, trans, & transaxle, donor car had 54000 mi. What are the pro's & cons. Thanks in advance. Cheers, Reaper

Cons: Older engines' Seals aren't designed for Synthetic Oils, so it could start to Leak with those. Also is more expensive than minerally based oils.

 

Pros: The oil Change interval could be Extended...

 

But it only applies if you Drive on Paved Roads Only, because even the Best Sealed & Filtered engine will somehow be affected by Dust or Dirt going to the Oil, so if you Drive Off Road, a Synthetic oil is not a Good Idea.

 

 

I Always use Motul 20W~50 Mineral Oil on the EA82 Engine:

 

Kind Regards.

Edited September 28, 201114 yr by Loyale 2.7 Turbo
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I am not going to make this another "Opinion based" thread, but I will say, your EA82 will love running Conventional 10w-40 year round.

 

You could run a higher grade of gear oil if you wish, that really won't hurt anything, Royal Purple or Lucas is good for gear oils. And for an ATF, I like to run something for higher milage trans.

 

Just my two cents.

 

Cheers,

-Tom

For my .02. I think Redline 75/90 is the best for the rear diffs. Ive got 3 friends running it that say its a great product and GD has recommended it to me himself.

I've tested many Gearbox / Differential Oils in the Past, in many cars and in my Own experience with those, Specially with Older Gearboxes or Diffs, The Best oil is the one Reinforced with Molybdene:

 

 

Somehow is the Same Black Grease Base that we use on C.V. Joints:

 

 

 

(Motul 31721L Gearbox 80W-90 Molybdenum Bisulphide

-MoS2- Reinforced Extreme Pressure Gearbox and Differential Lubricant)

 

This Shiny Black Oil not only makes Quieter any old Gearbox, it also makes Easier Shifting.

 

Believe me, the Difference is Huge, I Run my Weberized Wagon's 5MT with it since around year 2000 (I usually Change it every three years), also I poured it onto many other Manual Cars with great results.

 

Kind Regards.

Edited September 30, 201114 yr by Loyale 2.7 Turbo
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I'm running Pennzoil Ultra synthetic oil in my 83 EA81. No problems whatsoever. Don't believe the myths.

 

Most of the "You can't run synthetic oil if X" myths started in the 80s with the early synthetic oils. They've come a long way since then. There are no downsides to running synthetic in a HEALTHY motor other than the cost.

 

If your motor already leaks or burns oil, then switching to synthetic could make it worse.

Edited September 28, 201114 yr by Splinter

Synthetic oil is generally better for an engine anyway.

It thins less when the engine cools, so allows for an easier start, lasts longer, and doesn't thin with age.

If synthetic oil makes your engine get worse, it's probably on it's way out anyway...

Thanks to all, good info. Cheers, Reaper

Picture please!! Would love to see your project.

Picture please!! Would love to see your project.

 

Heres some from his other post with the link to all the photos.

Here is the link: http://s1102.photobucket.com/albums/g445/caveman51/

 

Here are a couple of pictures out of it: