Oil Problems

[jkslvr]

I bought a pinz and have some oil issues. I was told that the owner put a full synth in it. So, It needs a change. Is it true that once you go snynth you cannot go to a blend, because of it wearing the seals out? I just dont know? can you run a synth in it anyway? Just some oil issues needed to be cleared up. That, and what weight are you putting it?


Thanks!

[Twin Pinzies]

Drain the synthetic oil. Change the filter and fill it with 20W/50. There is no problem with the small amount of synthetic that is left in the engine. It will all be gone after the next oil change.
While you are in the fluid change mode, do all 8 underbody gearboxes and also the steering gearbox. Fill them with GL-4 gear oil. Then you will know foresure that the fluids aren't still from Switzerland!

[pinzinator]

If your Pinzgauer does not leak or burn synthetic oil, my advice to you would be to stick with it. But odds are the engine will both burn and leak, as a Pinz engine just isn't tight enough after 30 years. Switching to regular oil will not hurt anything, I've done it with other vehicles a few times.

[jkslvr]

ok,


what company's oil are you using 20W-50

[Twin Pinzies]

ok,


what company's oil are you using 20W-50

Depending on where you are located, you may want to try different oil grades to see what works best. I have tried several different grades and the thicker 20W/50 (any brand) works best - by far! I only operate my Pinzies during the summer months at altitudes between 9,000 and 13,000 ft. here in Colorado, so I'm a bit of an exception.
I also use a lead additive with regular (cheap) unleaded gas.

[75pinz]

I use 15W40 Chevron Delo. Best oil I have found and I use it in everything.

[Twin Pinzies]

We haven't talked about Amsoil yet. Does anyone have experience with it? A friend of mine said that he actually noticed a marked improvement in the way his ran immediately after switching, and actually had tests run on his used oil (not sure what grade) to see how the Amsoil held up. Turns out, it did I guess.

[Pathfinder]

Oil Class 101.

Conventional oils have good lubrication value, but the packages that collect contaimates like unburt gas, water, surfic acid, and the other elements that float sluge to your oil filter will break down from heat and time. About 3 months or 3,000 miles. Conventional oils do not disapate heat, due to the fact that when refined, they can not get all the impurities out which cause friction in the oil. So an oil that allready has heat in it has a hard time disapating heat.

Synthetic oil has no impurities in it, so there is no friction in the oil, it disapates heat. Because the nature of the oil, the manifactures can put better collection packages in it that will last longer, you can go 7,500 miles with no time limit, as long as your oil filter is rated to that mileage. The conditioning package in synthetic oil that showed some consern, will only help swell seals and gaskets.

To better answer the original post, engines do not have a memory and you can change types of oil all you want. However, I do want to point out that in most newer vehicles, the oil ports in the engine block are alot smaller and an engine rated for 5W30 should always use that weight of oil, not a heavy oil weight like 10W40 or 20W50. Most US military are designed to run straight 30W.

Blend oils only have 11% synthetic oil in it for the conditioning package.

The best way I can compare the differences in the two types of oil is that of a typewriter and a computer, they both comunicate, but the computer doe's so much more. Thats the same with conventional oils and synthetics, they both lubricate, but the synthic oil doe's so much more for your engine.

This comes from over 20 years of working in the lubrication field.

All my vehicles run synthetic oils in the engine, transmissions, and all gear boxes.

And yes, they do make a synthetic GL-4 and Amsoil brand products are very good, I think one of, if not the best out there.

I hope this works for you.

[Erik712m]

This has been beat to death on the forum Syn is great i used it unit oil last oil change. the only reason i change to conventional oil, is price 5 gal $35 i can change the oil five times a year for what it cost in syn oil.Also you might want to read Jakes write up on oils from what i can see with these older engines you want to look for oils with hi Zn Pn levels

[Pathfinder]

I agree from reading old posts.

I read the question on switching back to conventional oils from syn oil and that what I was answering.

I have alot of vehicles that I use conventional oil in, but my daily driver's I prefer to use the syn in them. Less engine wear and in 105 degree heat, better heat transfer to help cool the engine.

To better explain myself here, if I have a vehicle that is 1985 or newer, I use syn oil. I have vehicles on the ranch that I only use conventional oils.

As far as costs goes, I look at what I need in terms of longevity and preformance for that vehicle. How long will it sit without being driven? And etc....

Sorry if I hit a nerve.

[andy]

Pathfinder, don't sweat it. There are a few of us out here who have a negative scale mechanical background and you could draw this stuff out in comic book form and it would still be hard, for me at least, to be sure I've got it straight. I for one appreciate the info. Thanks.

Andy

[jkslvr]

Yes,

I am not familiar with these Pinzgauers. And being a Mechanic I was interested in some oil ideas. my manual is all in Swiss german. lol

thanks for the the input guys.