Regular gas or Premium? (1 Viewer)

[vwynn]

I have an 06 and filled it up with 87 since premium is now 4.65 per gallon in SF BayArea . Noticeable difference in power loss. Sluggish throttle response.
Going back to Premium. My VVTi does not like Regular

goddam 4.65.... currently here at east bay prices are hovering $3.56... ive been filling up 87 for a few months now and i have no ill effect... i keep below 3k RPM anyways usually letting it shift around 2k... moving 33"s + lift + sliders averages me around 14 mpg city.

 

[slowhogg]

Well since I started this thread I filled up with Premium today, I will run several tanks and see if there is any difference... paid $3.14 a gallon

 

[HomersCanyonero]

I’m glad you can afford premium gas. Regular is $3.89 in my neighborhood.

 

[HomersCanyonero]

Premium is like $4.19

 

[JLee]

Mileage	Trip	Gallons	Cost	Per Gallon	Trip MPG	Adjusted MPG	Octane	Summary
179846		20.663	$50.81	$2.46				Miles Per Year:	11,110
180096	250	20.88	$45.50	$2.18	12.0			Total Miles:	26,403
180326	230	18.497	$44.37	$2.40	12.4	13.04	93	Average MPG:	13.87
180619	293	18.334	$45.08	$2.46	16.0	16.76	87	Adjusted MPG:	14.55
180865	246	16.276	$39.05	$2.40	15.1	15.85	93	Average Trip:	206
181009	144	12.936	$32.84	$2.54	11.1	11.68	87	Cost Per Mile:	$0.20
181309	300	19.537	$51.95	$2.66	15.4	16.11	93	Gas Cost Per Month	$186.55
181595	286	18.402	$44.15	$2.40	15.5	16.30	93
181870	275	19.773	$51.39	$2.60	13.9	14.59	93
182080	210	16.047	$40.10	$2.50	13.1	13.73	93
182405	325	19.228	$44.59	$2.32	16.9	17.73	87
182648	243	15.298	$35.17	$2.30	15.9	16.66	87
182801	153	9.465	$21.38	$2.26	16.2	16.96	87
183024	223	13.889	$34.99	$2.52	16.1	16.84	87
183200	176	10.94	$27.34	$2.50	16.1	16.88	93
183421	221	15.599	$39.29	$2.52	14.2	14.86	93
183750	329	18.919	$48.04	$2.54	17.4	18.24	87
183928	178	10.615	$25.89	$2.44	16.8	17.59	87
184206	278	16.565	$41.73	$2.52	16.8	17.60	93
184428	222	16.209	$44.88	$2.77	13.7	14.37	93
184737	309	19.456	$49.01	$2.52	15.9	16.66	93
184876	139	11.274	$28.17	$2.50	12.3	12.93	87
185021	145	9.654	$23.35	$2.42	15.0	15.76	93
185072	51	4.307	$12.14	$2.82	11.8	12.42	93
185148	76	5.388	$14.87	$2.76	14.1	14.80	92
185325	177	13.185	$32.95	$2.50	13.4	14.08	93
185655	330	20.291	$44.62	$2.20	16.3	17.06	87
185691	36	4.958	$13.88	$2.80	7.3	7.62	91	*lift installed*
185943	252	15.725	$39.30	$2.50	16.0	16.81	93
186048	105	8.605	$21.50	$2.50	12.2	12.80	93
186271	223	13.793	$35.99	$2.61	16.2	16.96	93
186431	160	10.655	$28.76	$2.70	15.0	15.75	93
186500	69	6.358	$17.16	$2.70	10.9	11.38	93
186786	286	18.109	$45.25	$2.50	15.8	16.57	93
186940	154	13.532	$33.82	$2.50	11.4	11.94	93
187242	302	16.423	$36.11	$2.20	18.4	19.29	91
187386	144	11.09	$31.04	$2.80	13.0	13.62	93
187574	188	14.963	$41.88	$2.80	12.6	13.18	91
187861	287	13.226	$33.71	$2.55	21.7	22.76	93
187970	109	12.638	$39.67	$3.14	8.6	9.05	93
188163	193	14.469	$42.49	$2.94	13.3	13.99	93
188409	246	19.011	$55.87	$2.94	12.9	13.57	93
188556	147	11.11	$34.99	$3.15	13.2	13.88	93
188641	85	5.957	$18.76	$3.15	14.3	14.97	93
188910	269	17.659	$46.96	$2.66	15.2	15.98	93
189066	156	14.227	$38.40	$2.70	11.0	11.50	93
189344	278	17.762	$50.60	$2.85	15.7	16.42	93
189624	280	18.744	$50.59	$2.70	14.9	15.67	93
189805	181	14.293	$43.58	$3.05	12.7	13.28	93
190034	229	16.252	$43.05	$2.65	14.1	14.78	93
190233	199	13.975	$37.02	$2.65	14.2	14.94	93
190562	329	19.241	$60.40	$3.14	17.1	17.94	91
190703	141	9.018	$29.03	$3.22	15.6	16.40	91
191011	308	19.472	$54.50	$2.80	15.8	16.59	93
191171	160	14.019	$44.01	$3.14	11.4	11.97	93
191456	285	18.369	$55.09	$3.00	15.5	16.28	93
191561	105	8.391	$24.83	$2.96	12.5	13.13	93
191761	200	12.896	$33.52	$2.60	15.5	16.27	93
191960	199	13.982	$43.61	$3.12	14.2	14.93	93
192126	166	10.667	$31.67	$2.97	15.6	16.32	91
192191	65	4.977	$15.03	$3.02	13.1	13.70	91
192476	285	20.202	$52.50	$2.60	14.1	14.80	93
192600	124	11.32	$29.42	$2.60	11.0	11.49	93
192742	142	12.894	$33.51	$2.60	11.0	11.55	93

 

[JLee]

Mileage	Trip	Gallons	Cost	Per Gallon	Trip MPG	Adjusted MPG	Octane	Summary
192934	192	14.229	$41.82	$2.94	13.5	14.15	92
193201	267	20.37	$55.79	$2.74	13.1	13.75	93
193449	248	20.852	$62.12	$2.98	11.9	12.48	93	Score
193661	212	18.44	$54.93	$2.98	11.5	12.06	93	Score
193953	292	19.653	$58.94	$3.00	14.9	15.59	93	Gulf
194182	229	16.536	$53.23	$3.22	13.8	14.53	91
194487	305	21.39	$57.73	$2.70	14.3	14.96	93
194610	123	10.329	$27.86	$2.70	11.9	12.49	93
194790	180	14.727	$39.75	$2.70	12.2	12.82	93
195029	239	20.217	$54.57	$2.70	11.8	12.40	93
195251	222	19.981	$55.53	$2.78	11.1	11.65	93
195467	216	18.766	$54.78	$2.92	11.5	12.07	93
195576	109	9.931	$30.38	$3.06	11.0	11.51	93
195667	91	7.843	$23.02	$2.94	11.6	12.17	93
195868	201	13.549	$39.82	$2.94	12.3	12.93	93
196133	265	16.245	$53.27	$3.28	16.3	17.11	91	Conoco
196446	313	20.902	$61.43	$2.94	15.0	15.71	93
196677	231	19.683	$59.03	$3.00	11.7	12.31	93
196897	220	19.438	$56.74	$2.92	11.3	11.87	93
197145	248	20.841	$62.92	$3.02	11.9	12.48	93
197359	214	16.33	$59.75	$3.66	13.1	13.75	93
197660	301	20.746	$70.52	$3.40	14.5	15.22	87
197914	254	18.383	$56.23	$3.06	13.8	14.49	93
198179	265	19.047	$56.55	$2.97	13.9	14.59	87
198369	190	12.244	$41.62	$3.40	15.5	16.28	93
198562	193	13.668	$49.19	$3.60	14.1	14.81	93
198818	256	18.147	$59.14	$3.26	14.1	14.80	93
198924	106	8.508	$25.18	$2.96	12.5	13.07	93
198980	56	5.056	$14.66	$2.90	11.1	11.62	93
199265	285	17.293	$60.16	$3.48	16.5	17.29	91
199329	64	4.297	$15.16	$3.53	14.9	15.62	91
199630	301	20.708	$61.90	$2.99	14.5	15.25	93
199845	215	18.378	$56.22	$3.06	11.7	12.27	93
200053	208	15.108	$51.50	$3.41	13.8	14.44	93
200294	241	18.46	$54.99	$2.98	13.1	13.69	93
200439	145	9.344	$29.33	$3.14	15.5	16.28	93
200700	261	19.048	$64.74	$3.40	13.7	14.37	93
200790	90	7.054	$25.39	$3.60	12.8	13.38	93
201071	281	19.232	$57.29	$2.98	14.6	15.33	93
201286	215	14.308	$42.34	$2.96	15.0	15.76	93
201431	145	10.567	$35.18	$3.33	13.7	14.39	93
201643	212	13.534	$41.40	$3.06	15.7	16.43	93
201907	264	15.98	$51.12	$3.20	16.5	17.33	93
202065	158	9.998	$32.98	$3.30	15.8	16.58	93
202210	145	10.447	$29.45	$2.82	13.9	14.56	92
202327	117	7.88	$18.12	$2.30	14.8	15.58	87
202567	240	15.41	$52.07	$3.38	15.6	16.34	93
202780	213	17.309	$50.52	$2.92	12.3	12.91	93
202922	142	9.624	$30.69	$3.19	14.8	15.48	93
203137	215	15.569	$49.96	$3.21	13.8	14.49	91
203270	133	10.659	$35.16	$3.30	12.5	13.09	93
203364	94	7.439	$19.71	$2.65	12.6	13.26	87
203612	248	16.324	$35.90	$2.20	15.2	15.94	87
203786	174	16.538	$36.37	$2.20	10.5	11.04	87
203994	208	17.297	$50.14	$2.90	12.0	12.61	87
204250	256	20.541	$42.29	$2.06	12.5	13.07	87
204331	81	8.747	$18.19	$2.08	9.3	9.71	87
204502	171	15.179	$32.16	$2.12	11.3	11.82	87
204718	216	19.201	$44.14	$2.30	11.2	11.80	87
205019	301	20.891	$47.61	$2.28	14.4	15.11	87
205284	265	20.235	$44.50	$2.20	13.1	13.74	87
205577	293	18.864	$41.48	$2.20	15.5	16.29	87
205862	285	18.819	$41.38	$2.20	15.1	15.89	87
206056	194	18.262	$40.89	$2.24	10.6	11.14	87
206249	193	18.484	$45.45	$2.46	10.4	10.95	87

 

[Diff Kraken]

Mileage	Trip	Gallons	Cost	Per Gallon	Trip MPG	Adjusted MPG	Octane	Summary
192934	192	14.229	$41.82	$2.94	13.5	14.15	92
193201	267	20.37	$55.79	$2.74	13.1	13.75	93
193449	248	20.852	$62.12	$2.98	11.9	12.48	93	Score
193661	212	18.44	$54.93	$2.98	11.5	12.06	93	Score
193953	292	19.653	$58.94	$3.00	14.9	15.59	93	Gulf
194182	229	16.536	$53.23	$3.22	13.8	14.53	91
194487	305	21.39	$57.73	$2.70	14.3	14.96	93
194610	123	10.329	$27.86	$2.70	11.9	12.49	93
194790	180	14.727	$39.75	$2.70	12.2	12.82	93
195029	239	20.217	$54.57	$2.70	11.8	12.40	93
195251	222	19.981	$55.53	$2.78	11.1	11.65	93
195467	216	18.766	$54.78	$2.92	11.5	12.07	93
195576	109	9.931	$30.38	$3.06	11.0	11.51	93
195667	91	7.843	$23.02	$2.94	11.6	12.17	93
195868	201	13.549	$39.82	$2.94	12.3	12.93	93
196133	265	16.245	$53.27	$3.28	16.3	17.11	91	Conoco
196446	313	20.902	$61.43	$2.94	15.0	15.71	93
196677	231	19.683	$59.03	$3.00	11.7	12.31	93
196897	220	19.438	$56.74	$2.92	11.3	11.87	93
197145	248	20.841	$62.92	$3.02	11.9	12.48	93
197359	214	16.33	$59.75	$3.66	13.1	13.75	93
197660	301	20.746	$70.52	$3.40	14.5	15.22	87
197914	254	18.383	$56.23	$3.06	13.8	14.49	93
198179	265	19.047	$56.55	$2.97	13.9	14.59	87
198369	190	12.244	$41.62	$3.40	15.5	16.28	93
198562	193	13.668	$49.19	$3.60	14.1	14.81	93
198818	256	18.147	$59.14	$3.26	14.1	14.80	93
198924	106	8.508	$25.18	$2.96	12.5	13.07	93
198980	56	5.056	$14.66	$2.90	11.1	11.62	93
199265	285	17.293	$60.16	$3.48	16.5	17.29	91
199329	64	4.297	$15.16	$3.53	14.9	15.62	91
199630	301	20.708	$61.90	$2.99	14.5	15.25	93
199845	215	18.378	$56.22	$3.06	11.7	12.27	93
200053	208	15.108	$51.50	$3.41	13.8	14.44	93
200294	241	18.46	$54.99	$2.98	13.1	13.69	93
200439	145	9.344	$29.33	$3.14	15.5	16.28	93
200700	261	19.048	$64.74	$3.40	13.7	14.37	93
200790	90	7.054	$25.39	$3.60	12.8	13.38	93
201071	281	19.232	$57.29	$2.98	14.6	15.33	93
201286	215	14.308	$42.34	$2.96	15.0	15.76	93
201431	145	10.567	$35.18	$3.33	13.7	14.39	93
201643	212	13.534	$41.40	$3.06	15.7	16.43	93
201907	264	15.98	$51.12	$3.20	16.5	17.33	93
202065	158	9.998	$32.98	$3.30	15.8	16.58	93
202210	145	10.447	$29.45	$2.82	13.9	14.56	92
202327	117	7.88	$18.12	$2.30	14.8	15.58	87
202567	240	15.41	$52.07	$3.38	15.6	16.34	93
202780	213	17.309	$50.52	$2.92	12.3	12.91	93
202922	142	9.624	$30.69	$3.19	14.8	15.48	93
203137	215	15.569	$49.96	$3.21	13.8	14.49	91
203270	133	10.659	$35.16	$3.30	12.5	13.09	93
203364	94	7.439	$19.71	$2.65	12.6	13.26	87
203612	248	16.324	$35.90	$2.20	15.2	15.94	87
203786	174	16.538	$36.37	$2.20	10.5	11.04	87
203994	208	17.297	$50.14	$2.90	12.0	12.61	87
204250	256	20.541	$42.29	$2.06	12.5	13.07	87
204331	81	8.747	$18.19	$2.08	9.3	9.71	87
204502	171	15.179	$32.16	$2.12	11.3	11.82	87
204718	216	19.201	$44.14	$2.30	11.2	11.80	87
205019	301	20.891	$47.61	$2.28	14.4	15.11	87
205284	265	20.235	$44.50	$2.20	13.1	13.74	87
205577	293	18.864	$41.48	$2.20	15.5	16.29	87
205862	285	18.819	$41.38	$2.20	15.1	15.89	87
206056	194	18.262	$40.89	$2.24	10.6	11.14	87
206249	193	18.484	$45.45	$2.46	10.4	10.95	87

How on earth did you manage 9mpg one tank? A lot of idling?

 

[Infinity00]

I always get regular, I checked the mpg and how it ran against premium and didn’t notice a difference in performance and barely if anything in mpg. Decided it wasn’t worth it. Stock 2004 GX470

 

[JLee]

How on earth did you manage 9mpg one tank? A lot of idling?

Idling or off road / low range, no idea.

 

[captainva]

For 03-04 the engines did not have VVT-i and the owners manual calls for regular gas so no reason to put premium in. Starting in 05-09 the engine was changed to include VVT-i. The owners manual for these calls calls for premium but also says regular can be used temporarily if premium is not available. I'd be most interested to hear from people with an 05-09 who have been using regular have been seeing. Personally I always put premium in my 08

 

[Dharma Dude]

For 03-04 the engines did not have VVT-i and the owners manual calls for regular gas so no reason to put premium in. Starting in 05-09 the engine was changed to include VVT-i. The owners manual for these calls calls for premium but also says regular can be used temporarily if premium is not available. I'd be most interested to hear from people with an 05-09 who have been using regular have been seeing. Personally I always put premium in my 08

I have 05. I use regular exclusively. Tried premium....no noticeable difference.

 

[Dharma Dude]

This topic keeps has come up before. Please refer to the thread: GX470 - premium fuel??

Bottom line: most people notice no difference between premium and regular on all years. Some did report slight acceleration stepping on 87 and not on 91.