My Sunday in the Garage.

[blackdiamond]

This morning I finally swapped out the wonderful, and very new, 5w30 Pennzoil Platinum that I was running in my rebuilt 89 4Runner (22re) and replaced it with 10w-40 Valvoline Maxlife Blend. I am fairly certain that the leaking oil is coming from the engine rather than the transmission that has Redline MT90 in it. If the leak doesn't stop in time I'll have to re-evaluate the situation. Nothing leaked a drop before swapping in the synthetics so I opted to swap out the one that I suspect and also the one with the least cash investment. I know the new oil choice is overkill, but it will let me know what it's going to do.

I also swapped out the fluid in the twin transfer cases with 80w-90 Valvoline Blend. It had conventional/power punch after the recent rebuilt.

So sad to give up the Pennzoil Platinum so soon.

 

[ProfPS]

Why are you running 10w-40? If 5w30 syn was leaking, why not go to conventional 10w30 or in MaxLife? I have concerns with the 40 during if it is still breaking-in after the rebuild and with winter around the corner.

 

[blackdiamond]

I ran Maxlife 10w-40 in my 85 Toyota (22r) and it did fine. The winters here are fairly mild, the truck sits in the garage minimizing the cold temperatures and it sits a lot of the time. I'm fairly certain the 10w-40 is within the owners manual specs for the temperature ranges I'm expecting.

 

[Merkava_4]

You're pulling out all the stops by using Maxlife 10W-40; that's some serious heavy duty oil right there. You must be preparing that Toyota for a war zone. Good luck to you sir.

 

[Slick 55]

Hate to say it, but synthetic did not cause the leak. Especially in a rebuilt engine that should have all new seals and gaskets.

 

[blackdiamond]

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Hate to say it, but synthetic did not cause the leak. Especially in a rebuilt engine that should have all new seals and gaskets.

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I won't disagree with you, but at least it eliminated one of the possibilities. If the leak doesn't slow at all then the transmission is going back to conventional.

 

[blackdiamond]

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You're pulling out all the stops by using Maxlife 10W-40; that's some serious heavy duty oil right there. You must be preparing that Toyota for a war zone. Good luck to you sir.

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If you're ever driven a truck built for rockcrawling over a thousand miles one way and then spent a week on the trails in Moab, UT you would know how hard my rigs get worked. It isn't particularly difficult on the oil, but the overall rig gets a work out. This 4Runner get's the first trip in April.

 

[ARB1977]

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You're pulling out all the stops by using Maxlife 10W-40; that's some serious heavy duty oil right there. You must be preparing that Toyota for a war zone. Good luck to you sir.

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If you're ever driven a truck built for rockcrawling over a thousand miles one way and then spent a week on the trails in Moab, UT you would know how hard my rigs get worked. It isn't particularly difficult on the oil, but the overall rig gets a work out. This 4Runner get's the first trip in April.

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Do you have any pics of this rig?

 

[blackdiamond]

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Do you have any pics of this rig?

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The 4Runner "bdrunner" build-up link:

http://board.marlincrawler.com/index.php?topic=27774.0

 

[ccs v2.0]

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I am fairly certain that the leaking oil is coming from the engine rather than the transmission

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What makes you say this?

 

[blackdiamond]

The oil that is coming out doesn't seem to be the same as MT 90 (not as easy to tell as normal gear oil for me at least) and it seems to be coming out to far forward to be the transmission. Partially, just a hunch.

 

[ccs v2.0]

You need to positively rule it out. I say this because MT-90 found its way out of a seal in my Nissan's manual transmission. A ~4:1 ratio Amsoil/dino blend stopped the leak in about 6 months (I need to replace this blend since it's been about 30K miles).