Mobil 1 incl 0W40 $35 cash
 

Found a guy on Kijiji that sells 4.4L jugs for $35 cash. Especially good for people buying 0W40 as its rarely in stock/on sale at CT. Bought some, the jugs were sealed.
PM me if you want to text him, he's in the Yonge/16th area.

That seems kinda thick for these cars. Might be OK in my dad's TR6.

I wouldn't go any thinner with my HKS supercharger and oil cooler. He has all viscosities BTW but thanks.

I would suggest getting a pressure gauge before going up in viscosity... someone on here just put in a pressure gauge and has gone back to 0w20 from 5w30 because he was over 100psi with the oil up to temp over 4000 rpm.

cc @Trac Toy

HKS supercharger manual reccommends no less than 0W40. Car is not driven in Nov 1 to May 31. I won't be adding a lot more stuff to the car any time soon, won't even receive the replacement blower until possibly end of Sept. It's been a very expensive year.

I have been using 0W40 this year and I do have a pressure gauge installed. When the oil is at 195°F, at 4000rpm I see 90psi. That reading is taken from a sandwich plate at the oil filter which reads high compared to the ideal location at the block beside the AC compressor.

I don't daily or winter drive my car so adequate oil pressure at the track is my main concern. The only time I don't like the increase in pressure is during cold starts. That is when it gets silly. I always let the car idle a few minutes before taking off. Pressures drop to a reasonable level for gentle driving pretty quickly.

I don't want to go on and on and completely derail this thread. @wbradley thanks for posting up a good deal.