I have a 1997 Tahoe with the 5.7, has about 240,000 miles. Has a few oil ‘drips’ but not really an oil burner. Have no idea what the previous owner used but I have been using PYB since I bought it. Would there be any advantage to a high mileage oil if there are no oil use issues?
HM oil advantage?
- Thread starter mbaker
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Where is it leaking from? Are you adding any makeup oil between OCIs and, if so, how much?
HM oil would definitely be good for a motor with that many miles, but your particular leak may or may not be solved depending on where it is originating.
HM oil would definitely be good for a motor with that many miles, but your particular leak may or may not be solved depending on where it is originating.
Yeah if its leaking from under I doubt it will do much, but hey its worth using just to experiment and see what difference it makes. At 240k miles, I would likely go with HM oil anyways.. Im curious, how much $ have you spent maintaining the Tahoe to have it running with 240k miles, I am always wondering if people spend a good amount of money to keep their cars on the road for so many miles.. Im at 110k miles, and I feel like my car is getting older..(not that im having any issues) I apologize for going off topic!
It has a slow drip from around the oil pan gasket to timing cover. Not much maybe a quarter size spot or 2 if it sits for a few weeks. Otherwise Im not adding any makeup oil between changes at roughly 3000 miles. Honestly this year it has sat a lot, only put about 6000 on it since last January. I am changing oil more on time intervals (6 months) than on miles at this point.
Rolla07,
I haven’t spent that much on it, but I’m not the original owner, I bought it real cheap at about 220,00 after the original transmission went and the owner didn’t want to mess with it. I did get records from the previous owner though, and outside of normal 3K oil changes and maintenance, and of course the dreaded GM intake gaskets, nothing out of the ordinary was done on the engine. Front suspension has been reworked, and the transmission finally went at 220,000 but I say that’s doing pretty good. It still runs like a top, gets me around in winter and makes at least one 300 mile roundtrip pulling a boat each year without hiccup. I don’t see why it wouldn’t last to 300K or beyond if taken care of. Body wise its starting to show a little rust, but for the age and miles it looks pretty good. I originaly bought it as a 3rd vehicle and to pull the boat around locally and for my purpose it serves me very well.
Rolla07,
I haven’t spent that much on it, but I’m not the original owner, I bought it real cheap at about 220,00 after the original transmission went and the owner didn’t want to mess with it. I did get records from the previous owner though, and outside of normal 3K oil changes and maintenance, and of course the dreaded GM intake gaskets, nothing out of the ordinary was done on the engine. Front suspension has been reworked, and the transmission finally went at 220,000 but I say that’s doing pretty good. It still runs like a top, gets me around in winter and makes at least one 300 mile roundtrip pulling a boat each year without hiccup. I don’t see why it wouldn’t last to 300K or beyond if taken care of. Body wise its starting to show a little rust, but for the age and miles it looks pretty good. I originaly bought it as a 3rd vehicle and to pull the boat around locally and for my purpose it serves me very well.
I certainly do not think it will hurt anything.
Cured a small drip I had on my f350 with Mobil Super 5000 HM syn blend.
I was thinking of going with Mobil 1 HM (full syn) for the winter here on Long Island (NY) in 5w20. Mainly for cold start protection and the fact that I don't want to do another oil change until March.
The HM oils are usually a little bit thicker relative to the normal oils.
If you have been using conventional oil, the Mobil Super 5000 HM oil is a great product, priced right, and has great reviews from everyone here including me.
JC
Cured a small drip I had on my f350 with Mobil Super 5000 HM syn blend.
I was thinking of going with Mobil 1 HM (full syn) for the winter here on Long Island (NY) in 5w20. Mainly for cold start protection and the fact that I don't want to do another oil change until March.
The HM oils are usually a little bit thicker relative to the normal oils.
If you have been using conventional oil, the Mobil Super 5000 HM oil is a great product, priced right, and has great reviews from everyone here including me.
JC
Maxlife helped me out with a 1995 Honda Accord that had 180,000 miles on it and leaked a small amount of oil. This was back when Maxlife was the first HM oil ever advertised on TV. The engine also ran more smoothly.
I would use Maxlife in any higher mileage engine. It is really great stuff.
Even if the engine is not consuming oil, the pcv valve should be replaced regularly. Sometimes when it isn't, pressure in the crankcase builds up, and oil comes out the weakest seal. I usually see this in European engines, but it could happen to any engine. OEM PCV valves are usually the best. Get ready to replace the PCV hoses, as they usually fall apart if the vehicle has high miles.
I would use Maxlife in any higher mileage engine. It is really great stuff.
Even if the engine is not consuming oil, the pcv valve should be replaced regularly. Sometimes when it isn't, pressure in the crankcase builds up, and oil comes out the weakest seal. I usually see this in European engines, but it could happen to any engine. OEM PCV valves are usually the best. Get ready to replace the PCV hoses, as they usually fall apart if the vehicle has high miles.
Nick1994
$100 site donor 2024
I have a '96 Silverado with the Vortec 5.7 and it ran best on Castrol GTX HM 10w30. It's not so quiet now with Maxlife but it's alright I guess.
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