Is Mobil 1 15W-50 too think of an oil to use in an LS1??

 

How many miles on it? I run 15w50 on mine but I got 55k+ on mine and cause the turbos thin out the oil to much for my liking.

 

I wouldn't use it.

Moving to Internal Engine... <img border="0" alt="[burn out]" title="" src="graemlins/gr_burnout.gif" />

 

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Colonel:
<strong> I wouldn't use it.

Moving to Internal Engine... <img border="0" alt="[burn out]" title="" src="graemlins/gr_burnout.gif" /> </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">What are you using in your 422? MTI has me using 15W50 in mine - what they recommended if I was going to use a synthetic.

 

I was reading about oil and oil weights somewhere. In the statement it commented that 5w50 was a good all around weight. It's free pumping at colder temps but has the heavy film for protection. I have run Castrol Full Synthetic 5w50 with a k&N high flow oil filter for the past 10000K now and am happy with it... The 15W50, I live in a colder climate......
GM recommends the 5w30 10w30 which is also good, but none the less I would go with a full synthetic just because of the fact of it's break down qualities.
I know this is not of much help, but I was bored.
Curious, what is everyone else using????

Question: What are the benefits of SYNTEC FULL SYNTHETIC?
Answer:

SYNTEC Full Synthetic SAE 5W-50 provides the widest range of protection available. The 5W provides rapid oil circulation at start-up and the 50 delivers a thicker high temperature oil film for ultimate wear protection.
SYNTEC Full Synthetic, with unique molecular components, is also available in SAE 0W-30, 5W-30, 10W-30 and 10W-40
Active formula helps extend engine life by reducing wear and keeping engine clean
Patented stabilizers aggressively seek out and neutralize harmful and corrosive particles, suspending them away from engine parts
SYNTEC's unique molecular structure bonds to engine parts and it provides a level of protection superior to conventional oil
Helps prevent sludge from forming in your engine
Neutralizes acids in your engine that can cause rust and corrosion on vital engine parts such as cylinders, bearings and hydraulic valve lifters.
SYNTEC can be used with confidence in every gasoline engine passenger car, new or old, regardless of oil previously used
SYNTEC is fully compatible with all conventional and synthetic oils
Exceeds the toughest gasoline engine protection requirements for passenger cars and light trucks
Meets the world's toughest gasoline engine protection requirements
SAE Viscosity Grade Temperature Conditions Descriptions
5W-30 Below 0° F Provides excellent fuel economy and low-temperature performance in most late-model automobiles. Especially recommended for new cars.
10W-30 Above 0° F Most frequently recommended viscosity grade for most automobile engines, including high-performance multivalve engines and turbo-charged engines.
10W-40 Above 0° F The first multigrade introduced. A good choice for controlling engine wear and preventing oil breakdown from oxidation. Note: Always check your owner's manual or warranty requirements before using this grade.
20W-50 Above 20° F Provides maximum protection for high-performance, high-RPM racing engines. Excellent choice for high temperature and heavy loads such as driving in the desert or towing a trailer at high speeds for long periods of time.
SAE 30
SAE 40 Above 40° F
Above 60° F For cars and light trucks, where recommended by manufacturers. Not recommended when cold-temperature starting is required.

 

Ive had it in 3 different LS1s, 1 '01 and 2 '02s and you think your valvetrain is loud now.... wait untill you put thatin there <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" /> I can hear them a mile away. Needless to say, Ive never used it again.