If you mean 5w20 synthetic the answer is NO. Pontiac recommends SAE 10w30 weight oil in Synthetic or Conventional. Use exactly that weight.
Sunset Beach - 1997 1-520 was released on: USA: 2 February 1999
I have a used "riot" 520-30 butt stock.
520
It is 520
520
520
520
520
4.8 percent of 520 = 24.96%4.8% of 520= 4.8% * 520= 0.048 * 520= 24.96%
11% of 520 = 11% * 520 = 0.11 * 520 = 57.2
85% of 520= 85% * 520= 0.85 * 520= 442
70% of 520= 70% * 520= 0.7 * 520= 364