Oil advise.
Thread Starter
TECH Regular
Joined: Aug 2009
Posts: 430
Likes: 76
From: Grand Valley
Oil advise. Getting a LQ4 ready for my Camaro. Comp cam, Brian tooley valve train.
I live in Canada, car is stored in winter months.
What's your guys opinions on Rotella T 15w40, or Rotella 10w30 syn blend?
I live in Canada, car is stored in winter months.
What's your guys opinions on Rotella T 15w40, or Rotella 10w30 syn blend?
Not a bad oil at all. Well known in the diesel world as a primary choice. Valvoline Blue seems to be as good, but a bit cheaper.
However, I don't think your car is equipped with a diesel engine, so why use it?
I don't like to use an oil with a high winter rating. I want the oil to flow to all the parts as soon as possible. I prefer a 0W or 5W.
However, I don't think your car is equipped with a diesel engine, so why use it?
I don't like to use an oil with a high winter rating. I want the oil to flow to all the parts as soon as possible. I prefer a 0W or 5W.
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If it's been rebuilt right then it will be within stock new clearances unless They request the builder make rod clearances a little larger than say .002 " or whatever part They may want different .
The amount of zinc in the oil was reduced a while back because when burned it clogs up and ruins the cats. If you live where you need to get regular smog checks, that could be a long term problem.
Zinc is an important wear additive to protect the flat tappets. The LS engines do not have flat tappets, so it's not an issue. Some diesel engines - Cummins - still have flat tappets, so the extra zinc is important for them.
Diesel oils also have less zinc in them they used to. And if the oil is also rated for a gas engine, then it has even less zinc than you think it does. That's why people will tell you that they've been running diesel oil for a decade without any emissions problems - because there's not enough zinc to matter.
Nothing wrong with running diesel oil in a gas motor. Seems to work just as well as anything else. But if you're paying extra to get something extra, probably not worth it.
Then there's the whole dino vs. synthetic conundrum.
Zinc is an important wear additive to protect the flat tappets. The LS engines do not have flat tappets, so it's not an issue. Some diesel engines - Cummins - still have flat tappets, so the extra zinc is important for them.
Diesel oils also have less zinc in them they used to. And if the oil is also rated for a gas engine, then it has even less zinc than you think it does. That's why people will tell you that they've been running diesel oil for a decade without any emissions problems - because there's not enough zinc to matter.
Nothing wrong with running diesel oil in a gas motor. Seems to work just as well as anything else. But if you're paying extra to get something extra, probably not worth it.
Then there's the whole dino vs. synthetic conundrum.
.Bob's comments on zinc and cats are basically invalid, as I said the Rotella oils are API rated for gas engines. It would not be API rated for gas if the level of zinc were high enough to do cat damage.
Mast motorsports bets their warranty on Rotella so it must not be that bad for rebuilt or built engines!
The owner/operator of a Mast Motorsports must, under all conditions, abide by the following maintenance schedule and procedures:
Check and monitor engine coolant level and temperature before and during operation.
Check and monitor engine oil level and temperature before and during operation.
Change engine oil every 25 hours or 3 months (whichever comes first).
Change fuel filter/pressure regulator every 100 hours or 12 months (whichever comes first).
Use Shell Rotella T 15w-40 or equivalent.
Full warranty here
http://www.mastmotorsports.com/warranty/warranty.php
Based on what facts?
Mast motorsports bets their warranty on Rotella so it must not be that bad for rebuilt or built engines!
The owner/operator of a Mast Motorsports must, under all conditions, abide by the following maintenance schedule and procedures:
Check and monitor engine coolant level and temperature before and during operation.
Check and monitor engine oil level and temperature before and during operation.
Change engine oil every 25 hours or 3 months (whichever comes first).
Change fuel filter/pressure regulator every 100 hours or 12 months (whichever comes first).
Use Shell Rotella T 15w-40 or equivalent.
Full warranty here
http://www.mastmotorsports.com/warranty/warranty.php
Mast motorsports bets their warranty on Rotella so it must not be that bad for rebuilt or built engines!
The owner/operator of a Mast Motorsports must, under all conditions, abide by the following maintenance schedule and procedures:
Check and monitor engine coolant level and temperature before and during operation.
Check and monitor engine oil level and temperature before and during operation.
Change engine oil every 25 hours or 3 months (whichever comes first).
Change fuel filter/pressure regulator every 100 hours or 12 months (whichever comes first).
Use Shell Rotella T 15w-40 or equivalent.
Full warranty here
http://www.mastmotorsports.com/warranty/warranty.php