Some more personal
opinions: Just man up to it and run the best..
"Never had a problem with it in the Motul 300V 5w-40 Biosynthese in my '98 Subaru Impreza. Ran it from about 150K to about 204K miles @ 3.5K OCI's...this was a daily driver/autocross car. Never had any smoke or oil consumption, it was great."
"It is safe to use, but not cost effective unless it cures or lessens a problem that less expensive and more cost effective oils don't." - Price doesn't matter for you so go for it..
"I've been using the Motul 300V for a good 4yrs+ (Daily drive plus trackdays) with no issues whatsoever."
"I've been told by my mechanics that royal purple will degrade the quality of seals if used more than once."
"I've use the Motul 300V Power Racing 5W-30 grade for the past 4 years and have no complains especially with maintaining oil temperatures on the track and hard winding road use. The only downside is, the oil needs to be more frequently changed out to ensure it's performing at it's optimal range. I make an oil change and oil filter change every 2500KMs instead of the usual intervals."
"Started using Motul 8100 earlier this year and was raving over the decrease in engine noise (friction) and oil usage. I did some reading and decided to give it a shot. The 8100 X-Cess 5W-40 I used seemed to run smoother but oil usage didn't decrease. George also mentioned in a later thread he was considering the Motul 300V.
This week I changed to the Motul 300V "Power" 5W-40, and the decrease in friction is unbelievable. I have only hit 60 mph in 2nd gear (GT) a few times during the past 5+ years because the engine felt like it was about to throw a piston through the hood. After the 300V fill, I drove around 20 minutes or so, then hit it from 1st to 2nd. The engine smoothly reached 6500 rpms while in 2nd gear, speed was about 55 mph. I pushed it a little more in 2nd hitting 62 mph with no problem. The engine was smooth as silk. Performance increased through all gears.
The 300V is racing oil and probably shouldn't be used all the time due to lack of detergent additives (
not true). I would certainly use it for running the quarter or for a track day. My EGT was probably 100 deg lower than usual as well. This stuff is like liquid power. The difference between the 300V and Mobil 1 is night and day. 300V is an ester based oil (100% synthetic) and is quite expensive at $15/quart. I just wanted to see how good it performed. So far, it is way above any motor oil I've been around. We used ester based oils for turbine lubrication due to the extremely low shear rate and longevity. The sound of the R engine above 6000 rpm with this oil reminded me of the turbines running similar lubrication."
"I think Motul 300V is great for our cars. I use 5W40, the engine sound is better than previous used Mobil1 0W40 or 5W50. 300V is developed for racing cars. For street use we need short intervals (6months/5000km max.)"