Havoline and sludge

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I had a 74 Gran Fury HP 440 that exclusively used 10w40 Havoline the entire life of the car (late 74 to early '93) and it never had a drop of sludge in that engine. It developed massive leaks during the twilight of its years, but other than that the engine looked brand new on the inside. In fact, when I sold the car the guy that bought wanted to know when I had the engine rebuilt, as everything looked new when he popped the valve covers. I told him that the motor hadn't ever been touched internally and I think he thought I was lying. (After he rebuilt it he started using Pennzoil, which he said DID have a tendency to leave sludge. He went back to Havoline after 30k and never had another problem as far as I know.)
 
quote:

Originally posted by James408:
Have any mechanics out there had any problems with Havoline sludging up a motor?

Some mechanics/hot rodders have advised me to stay away from Havoline because it causes sludge. I have seen a motor that used Havoline apart and it was sludge up. Now for fairness, I do not know how well this motor was maintained. Has anybody had sludge problems with Havoline?


Tell those mechanics and rodders that the bus is here to pick them up for school...

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Dan
 
The Sequence VG test, required for a GF-4 certification, is 216 hrs long & tests for sludge and varnish deposits.

If the GF-4 Havoline 5W-20, 5w30, or 10w30 generates sludge in a particular engine, after passing the Sequence VG test, than every GF-4 conventional oil on the market, Chevron, ConocoPhillips, Valvoline, Pennzoil, Mobil, etc. will do the same! Forgive me if I am missing something but 10 days (216 hrs.) isn't much of a test for Sludge.
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quote:

Originally posted by Bill:

quote:

posted by ToyotaNSaturn


Have those guys check out this UOA - 10000 miles on Havoline...

Toyota,

I believe Havoline is a great oil but the oil analysis reference in the link was doped with LC
which assisted the oil in reaching 10,000 miles,
the oil did not reach this level of service without an additive to help,
not a bad thing that LC aided the host lubricant
but this is a biased analysis.

As more oil analysis show up on this site with LC added, we will see many oils exceed our expectations.

Bill


The first run was a 6000 mile run without LC.
 
Since I started this post back in May, I was really surprised to see replies in August. I again want to apologize for the misinformation on the sludged up motor using Havoline.

I just put the Havoline 20w50 in my '69 Firebird.
I know, I know, people on this sight recommended 15w40 for my ride and I tried it. My 400 and I seemed to prefer the Havoline 20w50 and it is running great, even in this south Texas heat. I am going to try Havoline in my '97 Ford f150 next.
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Thanks Molakule,if i said that everyone would criticize me now that you said it, maybe some will realize how good Havoline is.
 
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